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* * * * * C/2000 WM1 (LINEAR) * * * * *
lightcurve and colour images Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2002 6 17.98 S 12.9 AC 41.0L 121 1.0 2 RES Szamotuly (Comet near globular cluster M13.) 2002 6 6.99 S 12.7 AC 41.0L 121 1.4 2 RES Szamotuly 2002 6 4.91 S 12.5 AC 41.0L 121 1.5 2 RES Szamotuly 2002 6 1.91 S 12.4 AC 41.0L 121 1.4 2 RES Szamotuly 2002 5 31.957 S 11.6 TK 31.0J 72 2 1/ DIJ Sint Annen 2002 5 31.954 S 12.0 TK 31.0J 72 1.8 2 BOU Sint Annen 2002 5 19.06 S 11.7 TK 25.6L 42 1.5 4 BIV Ablis 2002 5 17.96 S 11.8 AC 41.0L 72 1.5 2 RES Szamotuly 2002 5 16.99 S 11.8 TK 20.3L 48 1.0 4 BIV Noordwijk aan Zee 2002 5 16.89 S 11.6 AC 41.0L 121 1.8 2/ RES Szamotuly 2002 5 15.99 S 11.5 AC 41.0L 121 1.5 2/ RES Szamotuly 2002 5 14.89 S 11.4 AC 41.0L 72 1.7 2/ RES Szamotuly 2002 5 14.01 S 11.5 AC 41.0L 121 1.4 2/ RES Szamotuly 2002 5 12.934 S 11.3 TK 25.4J 72 1.8 2 DIJ Sint Annen 2002 5 12.933 S 11.3 TK 25.4J 72 2.2 3 BOU Sint Annen 2002 5 12.93 S 11.7 TK 20.3T 67 2.0 5 BIV Pico-Veleta, Spain 2002 5 12.10 S 11.9 TK 20.3T 67 2.0 4 BIV Pico-Veleta, Spain 2002 5 11.89 S 11.3 AC 41.0L 72 1.2 2/ RES Szamotuly 2002 5 9.89 S 11.1 AC 41.0L 72 1.3 2/ RES Szamotuly 2002 5 7.93 S 10.8 AC 41.0L 72 1.6 2/ RES Szamotuly 2002 5 6.90 S 10.7 AC 41.0L 72 1.5 2/ RES Szamotuly 2002 5 5.00 S 11.1 TK 20.3T 100 1.5 3 GRA Fjellhamar (Only faintly seen in astronomical twilight [Sun 13 deg. below horizon].) 2002 5 3.98 S 11.0 TK 20.3T 100 1.5 3 GRA Fjellhamar (Faint, but detected at correct location. Its telescopic visibility was inferior to NE appearance of C/2002 C1. Bortle class 5 sky.) 2002 5 3.88 S 10.8 AC 41.0L 121 1.5 2/ RES Szamotuly 2002 5 2.954 S 10.8 TK 25.4J 72 2.2 2 BOU Sint Annen 2002 5 2.89 S 10.7 AC 41.0L 121 1.5 2/ RES Szamotuly 2002 4 30.97 S 10.5 TT 41.0L 121 1.5 3 RES Szamotuly (Bright star very nearby.) 2002 4 29.95 S 10.4 TT 41.0L 121 1.8 3 RES Szamotuly (Moonrise. Excellent conditions.) 2002 4 22.98 S 10.2 AC 41.0L 72 2.0 2/ RES Szamotuly (Comet near bright star. Moonlight.) 2002 4 20.11 S 10.3 TK 25.6L 42 2.0 3 BIV Longuesse 2002 4 14.04 S 10.3 TK 25.6L 42 2.0 4 BIV Longuesse 2002 4 10.106 S 9.5 TK 25.4J 72 2.9 4 BOU Sint Annen 2002 4 8.14 S 9.3 TK 20.3L 48 3.5 5 BIV Noordwijk aan Zee 2002 4 8.106 S 9.3 TK 25.4J 58 2.8 3 DIJ Sint Annen 2002 4 8.104 S 9.5 TK 25.4J 58 3.2 4 BOU Sint Annen 2002 4 8.014 S 7.8 AA 12.0B 20 4 3 0.4 246 LOO Grand Bois (Broad, curved tail) 2002 4 7.111 S 8.8 AA 25.0L 53 2.5 3 LOO Genk 2002 4 7.101 M 9.3 TK 25.4J 58 2.5 4 0.1 250 BOU Sint Annen 2002 4 6.127 S 9.1 TK 25.4J 72 2.3 4 DIJ Sint Annen 2002 4 6.125 S 9.4 TK 25.4J 72 2.5 4 BOU Sint Annen (Some interference from nearby star of magnitude 7.1) 2002 4 6.12 S 9.7 TK 25.6L 42 3.5 6 0.17 250 BIV Ablis 2002 4 6.097 S 8.1 AA 25.0L 53 3 3 0.5 LOO Grand Bois (Curved tail, becoming broader towards the end.) 2002 4 5.14 S 9.5 TK 20.3L 48 3.0 5 BIV Noordwijk aan Zee 2002 4 5.115 S 9.2 TK 25.4J 72 3 3/ DIJ Sint Annen 2002 4 5.112 M 9.2 TK 25.4J 72 3.0 4 BOU Sint Annen 2002 4 5.11 S 9.5 TT 41.0L 72 2.5 2/ 0.1 270 RES Szamotuly 2002 4 4.15 S 9.3 TK 20.3L 48 2.5 5 BIV Noordwijk aan Zee 2002 3 30.12 S 9.4 TT 41.0L 72 2 2/ RES Szamotuly (Moonlight.) 2002 3 24.73 B 8.3 AA 10.0B 25 4 0.7 235 SEA The Entrance, NSW 2002 3 24.17 S 8.3 TK 20.3L 48 4.0 4 BIV Noordwijk aan Zee 2002 3 24.12 S 8.6 TJ 20.3T 100 4 3/ GRA Fjellhamar (Visible without difficulty.) 2002 3 23.18 S 8.1 TK 20.3L 48 5.0 4 0.2 240 BIV Noordwijk aan Zee 2002 3 23.142 S 8.5 TK 25.4J 47 3.5 4 0.4 240 BOU Sint Annen (Broad, diffuse dusttail...) 2002 3 23.06 S 8.6 TT 6.0B 20 3 2/ RES Szamotuly 2002 3 22.71 B 7.9 AA 10.0B 25 3 5 1.0 230 SEA Cowra, NSW (Tail a broad fan with p.a. from 220 - 240 degrees approx.) 2002 3 21.15 S 8.4 TK 20.3T 100 4.5 3/ GRA Fjellhamar (Twilight.) 2002 3 21.09 S 8.4 TT 6.0B 20 3 3 RES Szamotuly 2002 3 19.72 B 8.0 AA 10.0B 25 3 5 0.5 SEA Cowra, NSW 2002 3 14.74 B 8.1 TT 10.0B 25 3.0 5 >1.3 232 MAT Wallaroo, SA 2002 3 14.19 S 8.1 TK 20.3L 48 4.5 4 0.25 240 BIV Noordwijk aan Zee 2002 3 14.19 S 7.7 TK 5.0B 7 5 5 0.5 230 BIV Noordwijk aan Zee 2002 3 14.15 M 7.9 TJ 7.0R 24 5 4/ GRA Hågår Obs., Eina (Not difficult to see despite low altitude and astronomical twilight. My first post-conjunction observation.) 2002 3 13.73 B 8.1 TT 10.0B 25 2.0 5 >1 230 MAT Wallaroo, SA (Good conditions, tail is difficult to see against the milky way background. Click here for todays image of this comet. Celestron C11 + MX7c 2x20sec exposure.) 2002 3 12.16 S 7.7 TT 6.0B 20 3 3 RES Szamotuly 2002 3 11.70 S 7.7 AA 10.0B 25 3 6 SEA The Entrance, NSW 2002 3 10.21 S 7.3 TK 5.0B 7 5 5 0.5 230 BIV 2002 3 10.21 S 7.6 TK 25.6L 42 5.0 5 0.5 240 BIV 2002 3 8.20 S 7.0:TK 5.0B 7 5 3 BIV Noordwijk aan Zee 2002 3 8.20 S 7.2 TK 20.3L 48 3.0 4 BIV Noordwijk aan Zee 2002 3 3.22 S 7.2:TK 20.3L 48 3.0 5 BIV Noordwijk aan Zee 2002 2 21.78 B 6.1 TT 5.0B 7 4.0 6 >1 240 MAT Wallaroo, SA 2002 2 16.77 B 5.2 TT 5.0B 7 4.0 6 >4 225 MAT Wallaroo, SA 2002 2 15.77 B 5.0 TT 5.0B 7 4.0 6 >3 MAT Wallaroo, SA 2002 2 14.74 B 4.9 AA 0.0E 1 3.2 225 SEA Cowra, NSW (Tail possibly visible to 5.5 degrees naked eye.) 2002 2 13.74 B 4.6 AA 0.0E 1 5.2 220 SEA Cowra, NSW 2002 2 12.78 !B 4.5 TT 0.0E 1 7 MAT Wallaroo, SA 2002 2 12.74 B 4.4 AA 0.0E 1 6.0 220 SEA Cowra, NSW 2002 2 10.78 I 4.4 TT 0.0E 1 7 >2 MAT Wallaroo, SA (Good conditions, comparison VT mags Alpha Sgr(3.94), Iota Sgr(4.24), delta CrA(4.7). In 7x50B, coma diameter = 4.0', dust tail is 3.3 deg. in p.a. 222deg. First moonless observation. Magnitude corrected for extinction. Click here for todays image of this comet. Celestron C11 + MX7c 2x10sec exposure.) 2002 2 10.75 B 4.2 AA 0.0E 1 3.2 224 SEA The Entrance, NSW 2002 2 10.72 B 4.4 AA 3.0R 1 SEA The Entrance, NSW (Earlier observation using single power monocular while comet still relatively low. Later, comet was easier to see at higher elevation and estimate made using right eye only. Degree of astigmatism made comet and star images appear very similar. Tail traced for about 4.7 degrees with 10x50B. In 25x100B, possible star-like point glimpsed at centre of CC and bright spine visible in tail, contrasting with the dark 'shadow of nucleus' of earlier observations.) 2002 2 8.72 B 4.3 AA 0.0E 1 SEA The Entrance, NSW (Tail visible naked eye in darker sky. Stars and comet placed slightly out of focus to achieve 'softer' star images. In 25x100B, tail 3.7 degrees in p.a. 220 deg. Slightly curved toward south. Southern edge of tail broad and diffuse while northern edge sharp and clearly defined. Northern edge appeared like a bright, though diffuse, 'streamer', more intense than the rest of the tail.) 2002 2 7.78 I 4.3 TT 0.0E 1 7 MAT Wallaroo, SA (Conditions good, Magnitude corrected for extinction using comparison VT mags Alpha Sgr(3.94), iota Sgr(4.24). In 25x100B, dia. = 4', tail > 3 deg. in p.a. 220 deg. Moonlight interference 18%.) 2002 2 7.76 I 4.3 AA 0.0E 1 9 SEA The Entrance, NSW (In 25x100B, central condensation still very intense and 'planetary', although somewhat elongated along the direction of tail axis, giving coma a cone-shaped appearance. Broad and bright tail visible for at least 2 degrees.) 2002 2 6.78 I 4.3 TT 0.0E 1 7 MAT Wallaroo, SA (Foggy conditions!, using comparison VT mags Alpha Sgr(3.94), Beta1 Sgr(3.95), Iota Sgr(4.24). In 7x50B, coma diameter = 4.0', dust tail is > 2.5 deg in p.a. 220 deg. Moonlight interference 27%. Magnitude corrected for extinction [minor]. Click here for todays image of this comet. Celestron C11 + MX7c 2x15sec exposure.) 2002 2 5.78 I 4.0 TT 0.0E 1 7 MAT Wallaroo, SA (Conditions good, using comparison mags Alpha Sgr(3.94), Beta1 Sgr(3.95), iota Sgr(4.24). In 7x50B, the bullet shaped coma diameter = 4.0'. The dust tail is > 2.5 degrees in p.a. 220 deg. Moonlight interference 37%. Magnitude corrected for extinction [minor]. Click here for todays image of this comet.) 2002 2 4.78 I 3.8 TT 0.0E 1 7 MAT Wallaroo, SA (Conditions good, using comparison VT mags Phi sgr(3.15), Tau Sgr(3.45), Alpha Sgr(3.94), Beta1 Sgr(3.95). The comet has faded by 0.8 mag since my last observation 4 days ago. In 7x50B, coma diameter = 4.0' and its shape has become somewhat triangular. The dust tail is now well developed spanning >2 degrees in p.a. 215 deg. It is also faintly visible to the eye. Moonlight interference 47%. Magnitude corrected for extinction. Click here for todays image of this comet.) 2002 2 2.73 I 3.5 AA 0.0E 1 9 SEA The Entrance, NSW (Comet easily visible NE, appearing slightly 'softer' than stars and with a trace of tail. In 25x100B, comet was a magnificent sight with approx. 2 degrees of tail visible in moonlight. False nucleus resembled a tiny planet-like disk and sunward extremity of tail displayed 'parabolic' shape, well defined and of high surface intensity. Narrow 'shadow of nucleus' noted in centre of tail. False nucleus and tail both displayed a yellow colour. Easily the most spectacular comet since 1995 O1 and strongly reminiscent of 1996 B2 following perihelion.) 2002 1 31.78 I 3.0 TT 0.0E 1 8 MAT Wallaroo, SA (Conditions good, using comparison VT mags Sig Sgr(2.04), Zet Sgr(2.62), Phi Sgr(3.15), Tau Sgr(3.45). In 25x100B, coma diameter has expanded to 4.0' and the jets observed 48hrs ago have created a bright dust hood 11' long in PA 200 while the total tail length is over 2 degrees. Moonlight interference 89%. Magnitude corrected for extinction. Click here for todays image of this comet.) 2002 1 30.78 B 2.9 TT 0.0E 1 8/ MAT Wallaroo, SA (Transparency good, using the stars in the handle of the teapot for comparison: VT mags Sig Sgr(2.04), Zet Sgr(2.62), Phi Sgr(3.15), Tau Sgr(3.45). In 25x100B coma diameter=2.5' and the 2 bright jets observed yesterday morning have now developed into the classic parabola shape seen in drawings of the past. The tail is more prominent now arching over 2 degrees in length. In a 28cm telescope at 84x, the jets are separated by a "dark lane". Moonlight interference 95%. Magnitude not corrected for extinction. Altitude of comet and comparison stars respectively are 13,10,11,13 and 9 degrees. Click here for an image of this comet.) 2002 1 29.78 B 3.0 TT 0.0E 1 2 8/ MAT Wallaroo, SA (Transparency good, using the stars in the handle of the teapot for comparison: VT mags 2.04, 2.62, 3.15 and 3.45. Virtually starlike to the eye but 25x100B reveal 2 bright jets emanating from opposite poles of the nucleus shaped like a wide parabola. In a 28cm telescope at 84x, the brighter jet is ~60" long in PA 250 and the fainter jet is ~25" long in PA 120 while the main tail points towards PA 200 and is >30' in length. Unfortunately moonlight interference is 99%. Magnitude not corrected for extinction. However, Phi Sgr (3.15) was at the same elevation as the comet.) 2002 1 22.71 B 5.7 AA 10.0B 25 2 SEA Cowra, NSW (In darker sky, tail well visible to at least 2 degrees, despite very low elevation.) 2002 1 22.45 B 5.7 AA 10.0B 25 SEA Cowra, NSW (In moonlight and with some high cloud, only a trace of tail visible.) 2002 1 19.45 B 5.8 AA 10.0B 25 SEA Cowra, NSW 2002 1 18.48 B 5.7 AA 10.0B 25 SEA Cowra, NSW 2002 1 17.48 I 5.7 AA 0.0E 1 SEA Cowra, NSW 2002 1 17.48 B 5.9 AA 10.0B 25 0.8 8 2.7 153 SEA Cowra, NSW (Comet just visible NE. Nearby star of mag. 5.8 not seen.) 2002 1 16.51 B 6.0 TT 5.0B 7 3.0 7 >2.0 MAT Wallaroo, SA 2002 1 16.46 I 5.9 AA 0.0E 1 SEA Cowra, NSW 2002 1 16.45 B 6.0 AA 10.0B 25 2.2 153 SEA Cowra, NSW (Comet an impressive binocular sight in the dark rural sky. Tail clearly visible, with S-edge sharply defined and N-edge quite diffuse. Comet appeared to NE as a 'soft' star near the limit of visibility.) 2002 1 13.44 B 6.0 AA 10.0B 25 SEA The Entrance, NSW 2002 1 11.43 B 6.1 AA 10.0B 25 SEA The Entrance, NSW (Only a trace of tail visible due to haze and light pollution.) 2002 1 9.51 B 6.1 TT 5.0B 7 3 7 >1 129 MAT Wallaroo, SA (In 25x100B, the long & thin ion tail has intensified and is tracable for >1.5 degrees.) 2002 1 8.45 B 6.2 AA 10.0B 25 3 7 0.5 120 SEA The Entrance, NSW (Tail difficult due to some light pollution from Sydney. Same magnitude estimate using 10x50B, clearly indicating a fading since Jan. 1.) 2002 1 4.54 B 6.1 TT 5.0B 7 4 7 >1 110 MAT Wallaroo, SA 2002 1 1.45 B 5.8 AA 5.0B 10 SEA The Entrance, NSW ("Extreme" B Method used with both comet and comparison stars placed well out of focus to give low surface brightness. Narrow, straight tail visible in 25x100B to at least 1 degree, although smoke haze made actual length difficult to determine.) 2001 12 19.45 S 5.6 AA 0.0E 1 SEA Cowra, NSW 2001 12 18.42 S 5.6 AA 0.0E 1 SEA Cowra, NSW (In 25x100B, comet was a striking sight with two tails, a faint Type I, L = 1.6 degrees in p.a. 85 degrees and a broad, curving Type II, L = 0.8 degrees with the edge curving toward p.a. 47 degrees.) 2001 12 17.54 B 6.0 TT 5.0B 7 7 6 1 60 MAT Wallaroo, SA (In 25x100B, m2 is around 9th magnitude and tail length is >1.4 degrees curving towards the northeast.) 2001 12 17.45 S 5.6 AA 0.0E 1 SEA Cowra, NSW 2001 12 16.54 B 5.9 TT 5.0B 7 8 6 1 65 MAT Wallaroo, SA 2001 12 15.52 B 5.8 TT 5.0B 7 8 6 1 60 MAT Wallaroo, SA 2001 12 13.50 M 5.7 AA 5.0B 10 SEA The Entrance, NSW 2001 12 12.56 B 5.7 TT 5.0B 7 8 6/ >30m 50 MAT Wallaroo, SA (In 40x100mm binoculars m2 ~9th magnitude.) 2001 12 11.57 B 5.9 TT 5.0B 7 9 6/ >45m 45 MAT Wallaroo, SA 2001 12 10.46 S 5.4 AA 0.0E 1 SEA The Entrance, NSW 2001 12 9.733 S 5.3 TJ 5.0B 7 18 5 DIJ Bedum 2001 12 9.729 S 5.4 TJ 5.0B 7 15 5 BOU Bedum 2001 12 9.51 B 5.8 TT 5.0B 7 10 6/ >1 50 MAT Wallaroo, SA 2001 12 7.753 aM 5.5 TJ 5.0B 7 14 5/ 2.2 40 BOU Sint Annen 2001 12 7.728 S 5.4 TJ 5.0B 7 16 5 3.0 41 DIJ Tjamsweer 2001 12 6.864 S 6.0 TJ 5.0B 10 >10 6/ COM Roden (in 30.5-cmT at 56x strong central condensation, elongated, and a fine straight tail, > 1.0 deg. long.) 2001 12 6.80 M 5.5 TJ 5.0B 7 20 5 GRA Lorenskog (Comet clearly seen in binoculars despite a quite low altitude [15 degrees at upper culmination]. It was not seen with naked eye. Conditions were Bortle class 6-7 in direction of comet [class 5 near zenith]. Also observed with 7.0-cmR [24x]: m1=5.6 [ref. TJ], dia.=17' and DC=5; there was an apparently stellar central condensation of mag. approx. 8.5.) 2001 12 6.769 S 5.4 TJ 5.0B 7 16 6 2.5 43 DIJ Noorddijk 2001 12 6.738 aM 5.3 TJ 5.0B 7 16 5 1.5 40 BOU Sint Annen 2001 12 6.72 5.7 8.0B 20 20 3 BAR Milan 2001 12 6.51 B 5.8 TT 5.0B 7 11 6/ >1 30 MAT Wallaroo, SA 2001 12 4.48 B 5.7 TT 5.0B 7 12 6/ >1 33 MAT Wallaroo, SA 2001 12 3.49 B 5.8 TT 5.0B 7 12 6/ >1 33 MAT Wallaroo, SA (A beautiful object in 25x100B, the false nucleus m2 is ~9.0 with the brighter ?dust tail about 30' long arching northward from the faint ?gas tail >1.3 deg. in p.a. 33 deg. Naked eye estimate is around 5.7.) 2001 12 3.46 S 5.8 AA 5.0B 10 SEA The Entrance, NSW (Conditions poor with hazy sky.) 2001 11 26.95 M 5.7 TJ 5.0B 7 20 5 GRA Majorstuen, Oslo (This was a challenging observation due to moonlight and drifting clouds. Only the inner part of coma was visible without much trouble. Conditions were Bortle class 7 [NEL=5.0].) 2001 11 26.90 M 5.7 TJ 5.0B 7 15 5 SKI Hønefoss (Observation affected by moonlight and low clouds. Comet appeared fainter than M35, but clearly brighter than M33.) 2001 11 24.73 6.5 8.0B 20 10 4 BAR Milan (Moonlight.) 2001 11 24.07 S 6.1 TJ 6.3B 9 10 5 DAH Copenhagen 2001 11 23.73 6.6 8.0B 20 9 BAR Milan (Moonlight present.) 2001 11 23.07 M 6.3 TJ 6.3B 9 11 5 DAH Copenhagen 2001 11 22.941 S 6.0 TJ 5.0B 10 &15 5/ COM Roden (In 30.5-cmT at 56x strong condensation and broad fan-shaped tail.) 2001 11 22.98 M 5.8 TJ 5.0B 7 20 5 SKI Hønefoss (Comet seen with naked eye without much trouble. Conditions: Bortle class 4 [NEL=6.3].) 2001 11 22.936 M 6.0 TJ 5.0B 7 18 5 BOU Zuidwolde 2001 11 22.91 M 5.8 TJ 5.0B 7 20 5 GRA Fjellhamar (Appearance of comet was quite similar to open clusters M36, M37 and M38. It was not visible to naked eye. Bortle class 5 sky [NEL=5.7].) 2001 11 22.895 M 6.2 TJ 5.0B 7 22 5 DIJ Groningen 2001 11 22.04 M 6.0 TJ 5.0B 7 19 5 GRA Fjellhamar (With 20.3-cmT [62x], apparent nucleus of m2=11.5 [ref. AAVSO U Gem] and a 0.4 deg. tail. Bortle scale 5 sky.) 2001 11 21.87 S 5.9 TJ 5.0B 7 15 5 SKI Hønefoss (Comet appeared smaller, but brighter than M33, especially the inner part of coma. It was fairly easily seen to naked eye, while M33 was a challenge. Conditions were Bortle class 3-4 [NEL=6.5].) 2001 11 20.91 M 6.2 TJ 5.0B 7 17 4/ GRA Tryvann, Oslo (Observation affected by an incoming cloud front. Conditions were reasonable [Bortle class 6] for only a few minutes.) 2001 11 20.55 B 6.7 TT 5.0B 7 10 6/ MAT Wallaroo, SA (Transparency very good. In 25x100B, the comet displays a false nucleus of approx. m2=10.0 and a faint antitail? >15' in p.a. ~330deg.) 2001 11 20.08 M 6.4 TJ 7.0R 15 16 5 0.4 315 GRA Fjellhamar (With 7.0-cmR [15x], elongated coma, tail was faint. With 20.3-cmT [62x] on Nov 20.09, an apparently steller nucleus of m2=11.7 [ref. AAVSO U Gem] was surrounded by an inner coma of integrated magnitude of approx. 9.5 [ref. TJ] and dia. 1'.4. The tail was easier to detect with this instrument. Conditions: Bortle class 5.) 2001 11 19.98 B 6.4 TJ 5.0B 7 15 4/ SKI Hønefoss (Comet barely visible to naked eye. Conditions were favourable [Bortle class 3-4 sky, NEL=6.5].) 2001 11 19.906 M 6.3 TJ 5.0B 7 16 4/ BOU Sint Annen (In 25.4-cmJ [at 88x] nearly stellar condensation of magn. 11 visible. Antitail some 18' long in p.a. 324 deg.) 2001 11 19.90 M 6.2 TJ 5.0B 7 18 5 GRA Fjellhamar 2001 11 19.844 M 6.4 TJ 5.0B 7 14 5 DIJ Groningen (In 15.5-cmL [at 50x] antitail visible, 17' long in p.a. 316 deg.) 2001 11 19.788 S 6.3 TJ 5.0B 10 14 6 GIL Noordwijk aan Zee 2001 11 18.67 M 6.4 TJ 5.0B 7 16 5 GRA Kilpisjärvi, Finland Observed from Norwegian-Finnish border (69o 06'.6 N, 20o 45'.4 E, elevation 550 m), temperature was -22oC! Some interference from aurora and clouds, but quite dark when this observation was made [Bortle class 4, NEL=6.3]. Comet was not visible to naked eye. [A very good display of Leonids was observed during this evening despite a radiant altitude of only a few degrees.]) 2001 11 17.999 M 6.5 TJ 5.0B 7 14 6 DIJ Groningen 2001 11 17.997 S 6.6 TJ 5.0B 7 14 4 BOU Groningen (In 15.6-cmL [at 72x] nearly stellar condensation of magn. 10-11 visible. Broad (dust)tail some 15' long in p.a. ~215 deg. Also antitail, rather narrow, ~8' long in p.a. ~345 deg. All numbers only approximate, because clouds moved in before an accurate drawing could be made.) 2001 11 17.75 M 6.5 TJ 5.0B 7 15 5 GRA Skibotn (Observation affected by aurora, incoming clouds and not fully dark-adapted eyes. Conditions were Bortle scale 4-5 at best. [A fine display of bright Leonid meteors was observed during the following morning. Observations from this and the following night were made during Arctic Leonid Expedition 2001.]) 2001 11 15.88 M 6.8 TJ 5.0B 7 12 5 GRA Tryvann, Oslo (Coma appeared elongated in E-W direction. Bortle class 4-5 sky.) 2001 11 15.156 S 7.9 TJ 30.5T 56 & 8 4 COM Roden 2001 11 14.87 S 7.8 TJ 30.5L 72 9 5 0.25 225 GIL Noordwijk aan Zee (Tail less striking than observation of Nov. 9th.) 2001 11 14.856 S 7.1 TJ 5.0B 7 10 3/ BOU Zuidwolde 2001 11 14.851 M 7.2 TJ 8.0B 15 9 5 0.3 225 BOU Zuidwolde 2001 11 14.823 S 7.1 TJ 15.5L 50 12 6 DIJ Groningen 2001 11 14.04 M 7.2 TJ 7.0R 15 9 5 GRA Fjellhamar 2001 11 13.962 S 7.6 TJ 8.0B 15 9 4/ BOU Groningen 2001 11 13.785 M 7.3 TJ 15.5L 50 7 5/ 0.4 218 DIJ Groningen 2001 11 13.07 M 7.5 TJ 7.0R 15 8 5 GRA Fjellhamar 2001 11 13.040 M 7.5 TJ 15.5L 50 8 5/ 0.4 240 DIJ Groningen 2001 11 13.022 S 7.7 TJ 8.0B 15 9 4 BOU Groningen 2001 11 12.60 S 8.3 TJ 10.0B 25 4 6/ MAT Wallaroo, SA (First observation. The comet displays a highly condensed false nucleus, m2~11th magnitude, and a short dust fan pointing towards the southwest. NB Orbit crossing occurs on Nov 18th hence watch out for possible antitail plus enhancement of the main dust tail.) 2001 11 12.05 M 7.6 TJ 7.0R 24 8 5 GRA Hågår Obs., Eina 2001 11 11.935 S 7.8 TJ 8.0B 15 &10 4 BOU Groningen (Brief clear period. Comet easily visible from home location despite moderate light pollution.) 2001 11 10.92 M 7.7 TJ 7.0R 24 7 5 GRA Hågår Obs., Eina (Comet was easily visible, also in 7x50B. Favourable conditions [Bortle class 3-4], but windy.) 2001 11 9.84 S 8.4 TJ 30.5L 72 & 4 4 0.33 230 GIL Noordwijk aan Zee 2001 11 9.740 S 8.2 TJ 8.0B 15 7.5 4 BOU Sint Annen 2001 11 9.10 S 8.4 TJ 7.0R 24 5 5 GRA Fjellhamar (Comet was visible without much trouble despite less favouble conditions [Bortle class 6-7, snow covered ground].) 2001 11 8.832 M 8.7 TJ 30.5T 56 & 4 4 0.3 COM Roden (Comet has broad, fan-shaped tail, elongated coma. Nice object) 2001 11 8.08 S 8.5 TJ 15.2L 38 4.5 5 0.16 245 GRA Blindern, Oslo (Comet has become clearly condensed and an easy object despite a somewhat light polluted sky with a last quarter Moon [Bortle class 6 sky]. The tail was faint but I was quite sure of its reality. Total brightness of comet was similar to that of Messier 1.) 2001 11 5.772 S 8.9 TJ 25.4J 47 6 4/ DIJ Sint Annen 2001 11 5.766 M 8.7 TJ 25.4J 47 4.5 5 BOU Sint Annen 2001 11 3.74 S 9.0 TJ 7.0R 24 4 4/ GRA Brufoss (near Svarstad) (Comet only barely seen due to a smaller instrument, thin clouds and a rising Moon [Bortle class 5-6 sky]. The lunar occultation of Saturn was successfully observed later this evening. These observations were made during Deep Sky Exploration's "Star Meeting 2001".) 2001 11 3.12 S 9.2 TJ 20.3T 100 3.0 4 GRA Fjellhamar (Coma appeared elongated in approximately E-W direction. It was slightly brighter than M97. Observed in a transparent sky with a 2 days past full Moon [Bortle scale 6-7].) 2001 11 1.06 S 9.4 TJ 20.3T 100 2.8 4 GRA Fjellhamar (Diffuse coma with a central condensation of magnitude m2=12.7 [reference AAVSO U Gem chart]. Comet visible despite an almost full Moon [Bortle class 7 sky].) 2001 10 24.04 S 10.0 TJ 20.3T 100 3.1 4 GRA Fjellhamar (Comet fairly well seen despite its proximity to a 8th magnitude star. Conditions were Bortle class 5.) 2001 10 23.04 S 10.0 TJ 20.3T 62 2.6 3 GRA Fjellhamar (Coma appeared diffuse and ill-defined. Comet seen without difficulty in a Bortle scale 5 sky.) 2001 10 22.87 9.5 AC 25.0L 53 3 3 LOO Genk 2001 10 22.08 S 10.4 TJ 20.3T 100 2.0 3/ GRA Fjellhamar (Comet only barely visible due to bright sky background [Bortle class 6-7 at best]. There was a major auroral display during this night.) 2001 10 20.070 S 10.3 TJ 30.5T 56 2.5 3 COM Roden 2001 10 19.941 S 10.0 TJ 25.4J 58 2.9 3 DIJ Sint Annen 2001 10 19.938 S 10.2 TJ 25.4J 58 3.0 4 BOU Sint Annen 2001 10 16.915 S 10.3 TJ 31.0J 72 3.0 3/ DIJ Sint Annen 2001 10 16.912 M 10.5 TJ 31.0J 72 2.5 4/ 3m 270 BOU Sint Annen (Comet well visible and becoming more condensed. Length and PA of tail determined at 143x) 2001 10 15.869 S 10.6 TJ 31.0J 72 2.5 3 DIJ Sint Annen 2001 10 15.865 S 10.8 TJ 31.0J 72 2.7 4 BOU Sint Annen 2001 10 14.94 9.7 25.0L 53 2 1/ LOO Genk 2001 10 14.08 S 10.8 TJ 20.3T 62 2.2 4 GRA Fjellhamar (Comet was still faint but easier to detect than three nights ago. The coma also appeared larger and more condensed. Bortle class 5 sky.) 2001 10 11.08 S 11.3 TJ 20.3T 100 1.3 2 GRA Fjellhamar (This comet was very faint but seen at correct location. Sky was somewhat light polluted [Bortle class 5, NE limit 5.5-6], but very transparent.) 2001 10 8.823 S 10.5 TJ 31.0J 72 1.9 3 DIJ Sint Annen 2001 10 8.820 S 11.1 TJ 31.0J 72 2.8 3/ BOU Sint Annen 2001 9 29.131 S 11.5 GA 25.4J 72 1.9 3/ BOU Sint Annen 2001 9 14.903 S 12.8 AC 31.0J 109 1.2 3 BOU Sint Annen (Comet close to star of magn. 11.) 2001 8 29.074 S 13.5 GA 31.0J 143 0.8 3/ BOU Sint Annen 2001 8 16.989 S 13.8 GA 31.0J 177 0.6 3 BOU Sint Annen