123P/West-Hartley

123P/West-Hartley
Reported observations:
2019 May  06.43 UT: m1=13.4, Dia.=1.4’, DC=2, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Very diffuse. Comparison stars checked using APASS data in Guide 9.0. Method= S, Cat= AQ]
2019 May  05.84 UT: m1=13.7 CCD, Dia.=1′, ... 0.40-m f/10 SCT + CCD ... Josep M. Bosch (Observatory B74, Santa Maria de Montmagastrell, España)
2019 May  04.02 UT: m1=12.3, Dia.=2', DC=3, ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. 42º 55' N, 5º 48' W, alt. 1720 m) [Elongated coma. Sidgwick method. APASS comparison stars. SQM: 21.5]
2019 May  03.54 UT: m1=13.4, Dia.=1.4', DC=3, ... 40.0-cm L f/4.5(144x) ... Seiichi Yoshida (Gunma, Japan)
2019 May  02.50 UT: m1=13.7, Dia.=1.1', DC=3, ... 40.0-cm L f/4.5(144x) ... Seiichi Yoshida (Gunma, Japan)
2019 Apr. 28.41 UT: m1=13.9, Dia.=1’, DC=3, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Very diffuse. Comparison stars checked using APASS data in Guide 9.0. Method= S, Cat= AQ]
2019 Apr. 26.93 UT: m1=14.2 CCD, Dia.=0.54', DC=7, ... 0.20-m f/4 Schmidt - Newton + CCD ... Sergey Shurpakov (Observatory A98, Belarus)
2019 Apr. 24.87 UT: m1=13.5, Dia.=1.5, DC=3/, ... 30-cm T f/10(179x) ... Martin Lehky (Czech Republic)
2019 Apr. 07.38 UT: m1=12.8, Dia.=2’, DC=3, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude= 19.9°; Difficult, slight brightening to centre. Comparison stars checked using APASS data in Guide 9.0. Method= S, Cat= AQ]
2019 Apr. 02.89 UT: m1=11.5, Dia.=2', DC=3, ... 20-cm SCT(133x) ... Juan Jose Gonzalez (Alto del Celleron - Benllera, Leon, Spain. 42º 45' N, 5º 44' W, alt. 1190 m) [Sidgwick method. APASS comparison stars. SQM: 21.3]
2019 Apr. 01.90 UT: m1=12.2, Dia.=1.7', DC=2/, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.92]
2019 Mar. 23.90 UT: m1=11.5, Dia.=2.5', DC=3, ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. 42º 55' N, 5º 48' W, alt. 1720 m) [Sidgwick method. APASS comparison stars. SQM: 21.5]
2019 Mar. 09.94 UT: m1=11.8, Dia.=2.2', DC=4, ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Alto del Trichero, Leon, Spain. 42º 46′ N, 5º 53′ W, alt. 1190 m) [Sidgwick method. APASS comparison stars. SQM: 21.6]
2019 Mar. 05.17 UT: m1=12.3, Dia.=1.5', DC=3, ... 22-cm L(160x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [near a star with m1: 10.2]
2019 Feb. 24.95 UT: m1=12.4, Dia.=1.2', DC=4, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Puerto de Aralla, Leon, Spain. 42º 54' N, 5º 48' W, alt. 1530 m) [Sidgwick method. APASS comparison stars. SQM: 21.5]
2019 Feb. 11.67 UT: m1=13.3, Dia.=1’, DC=6, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Difficult due to glare from nearby star. Faintly stellar at centre, diffuse outer coma. Comparison stars checked using APASS data in Guide 9.0. Method= M, Cat= AQ]
2019 Feb. 10.94 UT: m1=14.2 CCD, Dia.=0.29', DC=8, Tail=1.5' in PA: 270 deg., ... 0.25-m f/4.7 Newton + CCD ... Sergey Shurpakov (Observatory C36, Belarus)
2019 Feb. 09.70 UT: m1=13.5, Dia.=1.3’, DC=6, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Faint stellar central condensation, diffuse outer coma. Comparison stars checked using APASS data in Guide 9.0. Method= M, Cat= AQ]
2019 Feb. 04.70 UT: m1=13.1, Dia.=1.4’, DC=6, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Faintly stellar in good seeing, diffuse. Comparison stars checked using APASS data in Guide 9.0. Method= M, Cat= AQ]
2019 Feb. 03.99 UT: m1=12.9, Dia.=1.5', DC=4, ... 27-cm SCT(92x) ... Valentín Díaz (Cancárix, Albacete, España)
2019 Feb. 03.68 UT: m1=12.9, Dia.=1.7’, DC=6, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse. Faint stellar central condensation, opaque inner coma. Comparison stars checked using APASS data in Guide 9.0. Method= M, Cat= AQ]
2019 Jan. 14.66 UT: m1=13.4, Dia.=1.1’, DC=5/, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Diffuse outer coma, small opaque centre. Appears stellar in good seeing. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2019 Jan. 14.06 UT: m1=12.7, Dia.=1.1', DC=5, ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [In evolution after the recent minor outburst. Faint and diffuse outer coma diameter: 3.5', providing m=11.2 (Tycho-2). Condensed inner coma diameter: 1.1', providing m=12.7. Near-stellar central condensation, m2=14.2:. Nearby field stars checked in DSS. Limiting stellar magnitude fainter than 14.5. Mountain location, very clear sky. APASS comparison stars. Sidgwick method. SQM: 21.5]
2019 Jan. 12.61 UT: m1=13.8, Dia.=0.9’, DC=6, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Difficult. Close to stars. Outer coma diffuse and semi-opaque, centre sometimes stellar in good seeing. Low altitude= 14.4°. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2004 Apr. 27.91 UT: m1=15.5 CCD, Dia.=0.5', DC=4 ... 15-cm L (1/5) ... Sergey E. Shurpakov (Baran', Belarus)
2004 Apr. 26.81 UT: m1=15.6 CCD, Dia.=0.5', DC=4 ... 15-cm L (1/5) ... Sergey E. Shurpakov (Baran', Belarus)
2004 Apr. 19.85 UT: m1=16.1 CCD, Dia.=0.75', DC=6 ... 15-cm L (1/5) ... Sergey E. Shurpakov (Baran', Belarus)
2004 Apr. 16.85 UT: m1=15.9 CCD, Dia.=0.5', DC=4 ... 15-cm L (1/5) ... Sergey E. Shurpakov (Baran', Belarus)
2004 Apr. 15.69 UT: m1=14.0, Dia.=0.7', DC=2 ... 41-cm L (200x) ... Andrew Pearce (Noble Falls, Western Australia)
2004 Apr. 15.22 UT: m1=14.5 CCD V, Dia.=0.54' ... 41-cm T (f/6.3) + ST-9E CCD + V filter ... Charles S. Morris (Dream Weaver Observatory, Fillmore, CA)
2004 Apr. 14.96 UT: m1=15.4 CCD, Dia.=0'.4, DC=5 ... 20 -cm L (f5) VESTA CCD ... Karel Prokes (Berlin, Germany) [acquired using modified VESTA web camera, IR and intrinsic color filters used]
2004 Apr. 14.94 UT: m1=16.1 CCD, Dia.=0.5', DC=4 ... 15-cm L (1/5) ... Sergey E. Shurpakov (Baran', Belarus)
2004 Apr. 14.29 UT: m1=14.6 CCD, Dia.=26", DC = 7/9 ... 0.41m SCT/CCD ... P. Clay Sherrod (ASO - Petit Jean H41) [A very nicely developing comet, with very strong central condensation (*m2=16.1CCD) and tail for 3.2' length in PA 300 deg.; clearly defined outer coma, very diffuse]
2004 Apr. 12.88 UT: m1=15.4 CCD, Dia.=0.3', DC=6 ... 15-cm L (1/5) ... Sergey E. Shurpakov (Baran', Belarus)
2004 Mar. 31.96 UT: m1=14.7 CCD, Dia.=0.3', DC=5 ... 15-cm L (1/5) ... Sergey E. Shurpakov (Baran', Belarus)
2004 Mar. 30.88 UT: m1=14.8 CCD, Dia.=0.5', DC=4 ... 15-cm L (1/5) ... Sergey E. Shurpakov (Baran', Belarus)
2004 Mar. 28.88 UT: m1=14.1 CCD, Dia.=0.7', DC=5, Tail: 2' in PA 295 deg ... 40-cm M f/3.8 ... Veijo Kallio (Lumijoki, Finland)
2004 Mar. 25.99 UT: m1=13.9 CCD, Dia.=0.50', DC=5, Tail: 3' in PA 275 deg ... 20-cm L (f5) VESTA CCD ... KarelProkes (Berlin, Germany) [Distinct stellar nucleus,acquired using modified VESTA web camera, IR filter]
2004 Mar. 25.71 UT: m1=13.6, Dia.=1.0', DC=3 ... 41-cm L (90x) ... Andrew Pearce (Noble Falls, Western Australia)
2004 Mar. 23.73 UT: m1=13.8, Dia.=0.8', DC=2 ... 41-cm L (90x) ... Andrew Pearce (Noble Falls, Western Australia)
2004 Mar. 22.99 UT: m1=14.8 CCD, Dia.=0.36', DC=9 ... 15-cm L (1/5) ... Sergey E. Shurpakov (Baran', Belarus)
2004 Mar. 20.95 UT: m1=15.0 CCD, Dia.=0.30', DC=9 ... 15-cm L (1/5) ... Sergey E. Shurpakov (Baran', Belarus)
2004 Feb. 23.75 UT: m1=13.7, Dia.=1.0', DC=4 ...  40.0-cm L f/4.5 (144x) ... Seiichi Yoshida (Ibaraki, Japan)
2004 Feb. 16.41 UT: m2=14.8 CCD, Dia.=19" inner, DC=6/9 ... 0.41-m SCT/CCD ... P. Clay Sherrod (ASO - Petit Jean H41) [Very fine double spike tail noted; with the main streamer (3' length) in PA 297 and secondary short spike in 282 deg., 40" length and quite bright; very vague toward outer coma; diameter of inner coma is 19"]
2004 Feb. 16.06 UT: m1=15.4 CCD, Dia.=0.5', DC=6, Tail= 1.5' in PA 290 deg ... 40-cm M f/3.8 ... Veijo Kallio (Lumijoki, Finland)
2004 Feb. 15.74 UT: m1=[13.4 ...  40.0-cm L f/4.5 (144x) ... Seiichi Yoshida (Ibaraki, Japan)
2004 Jan. 31.40 UT: m1=13.5 CCD, Dia.=21", DC=6/9 ... 0.41-m SCT/CCD ... P. Clay Sherrod (ASO - Petit Jean H41) [Beautiful short (1.1' length) fan tail from PA 278 to 308 deg.; coma is fairly large with strong central conds. (m2=15.6CCD)]
2004 Jan. 17.08 UT: m1=14.8 CCD, Dia.=0.33", DC=3 ... 11-cm L (1/7,3) ... Sergey E. Shurpakov (Baran', Belarus)
2003 Nov. 30.44 UT: m1=14.8 CCD, Dia.=12", DC=7/9 ... 0.41-m SCT/CCD ... P. Clay Sherrod (ASO - Petit Jean H41) [Nice tail for 70" in PA 302 deg.; coma is large and fairly diffuse with some condensation (*m2=16.0 CCD); observed in very unsteady air and very low in E. sky]
2003 Nov. 29.43 UT: m1=14.8 CCD, Dia.=14", DC=7/9 ... 0.41-m SCT/CCD ... P. Clay Sherrod (ASO - Petit Jean H41) [Very fine tail, 85" length, in PA 299 deg.; very fine softly diffuse coma with strong central conds.]
2003 Nov. 28.45 UT: m1=14.4 CCD, Dia.=11", DC=7/9 ... 0.41-m SCT/CCD ... P. Clay Sherrod (ASO - Petit Jean H41) [Beautiful comet with very fine tailin PA 300 deg., for 106" length; very distinct stellar nucleus (m2=17.1 CCD) with very thin nebulous coma surrounding]
Advertisements