MPEC 2009-M51 : COMET P/2009 L2 (YANG-GAO)
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M.P.E.C. 2009-M51 Issued 2009 June 29, 15:10 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
COMET P/2009 L2 (YANG-GAO)
Observations:
PK09L020 C2009 06 17.64449 18 17 17.75 -12 39 58.9 EM051J53
PK09L020 C2009 06 17.64792 18 17 17.79 -12 39 48.4 EM051J53
PK09L020 C2009 06 19.01611 18 17 56.44 -11 31 31.6 15.2 N EM051493
PK09L020 C2009 06 19.02419 18 17 56.59 -11 31 06.6 15.1 N EM051493
PK09L020 C2009 06 19.02628 18 17 56.62 -11 31 01.9 15.1 N EM051493
PK09L020 C2009 06 19.02840 18 17 56.67 -11 30 55.3 15.1 N EM051493
PK09L020 C2009 06 19.22734 18 18 02.42 -11 21 10.9 15.0 N EM051850
PK09L020 C2009 06 19.24230 18 18 02.65 -11 20 27.1 15.1 N EM051850
PK09L020 C2009 06 19.25726 18 18 02.94 -11 19 43.2 14.9 N EM051850
PK09L020 C2009 06 19.93132 18 18 21.71 -10 47 08.9 14.3 N EM051212
PK09L020 C2009 06 19.93354 18 18 21.75 -10 47 02.4 14.4 N EM051212
PK09L020 C2009 06 19.93797 18 18 21.86 -10 46 49.3 14.4 N EM051212
PK09L020 C2009 06 20.99420 18 18 48.16 -09 57 04.9 14.4 N EM051A02
PK09L020 C2009 06 20.99510 18 18 48.16 -09 57 02.3 14.4 N EM051A02
PK09L020 C2009 06 20.99784 18 18 48.30 -09 56 54.7 14.3 N EM051A02
PK09L020 C2009 06 22.92530 18 19 33.75 -08 30 06.2 15.9 N EM051585
PK09L020 C2009 06 22.92637 18 19 33.76 -08 30 03.1 15.9 N EM051585
PK09L020 C2009 06 22.92721 18 19 33.79 -08 30 00.9 15.9 N EM051585
PK09L020 C2009 06 22.92806 18 19 33.79 -08 29 58.5 15.9 N EM051585
PK09L020 C2009 06 22.92847 18 19 33.80 -08 29 57.9 15.9 N EM051585
PK09L020 C2009 06 22.92890 18 19 33.81 -08 29 56.4 15.9 N EM051585
PK09L020 C2009 06 22.92975 18 19 33.82 -08 29 54.1 15.9 N EM051585
PK09L020 C2009 06 22.93101 18 19 33.83 -08 29 51.3 15.9 N EM051585
PK09L020 C2009 06 22.93228 18 19 33.85 -08 29 47.5 15.9 N EM051585
PK09L020 C2009 06 22.93354 18 19 33.86 -08 29 44.4 15.9 N EM051585
PK09L020 C2009 06 22.93481 18 19 33.88 -08 29 40.0 15.9 N EM051585
PK09L020 C2009 06 22.93760 18 19 35.02 -08 29 25.2 14.4 N EM051J24
PK09L020 C2009 06 22.94192 18 19 35.09 -08 29 13.8 14.4 N EM051J24
PK09L020 C2009 06 22.94563 18 19 35.12 -08 29 04.5 14.4 N EM051J24
PK09L020 C2009 06 23.30618 18 19 42.42 -08 13 28.1 15.4 T EM051926
PK09L020 C2009 06 23.32101 18 19 42.62 -08 12 49.7 15.4 T EM051926
PK09L020 C2009 06 23.33388 18 19 42.77 -08 12 16.5 15.3 T EM051926
PK09L020 C2009 06 23.96378 18 19 57.00 -07 45 29.9 13.1 N EM051B96
PK09L020 C2009 06 23.96816 18 19 57.06 -07 45 19.9 13.2 N EM051B96
PK09L020 C2009 06 23.97326 18 19 57.13 -07 45 06.3 13.1 N EM051B96
PK09L020 C2009 06 23.97618 18 19 57.20 -07 44 59.1 13.2 N EM051B96
PK09L020 C2009 06 23.98039 18 19 57.18 -07 44 47.4 13.1 N EM051B96
PK09L020 C2009 06 23.98125 18 19 57.74 -07 44 39.3 14.6 N EM051J47
PK09L020 C2009 06 23.99021 18 19 57.47 -07 44 19.4 14.9 N EM051B74
PK09L020 C2009 06 23.99390 18 19 57.90 -07 44 07.5 14.9 N EM051J47
PK09L020 C2009 06 23.99403 18 19 57.58 -07 44 08.9 14.5 N EM051B74
PK09L020 C2009 06 23.99529 18 19 57.59 -07 44 07.4 14.5 N EM051B74
PK09L020 C2009 06 24.00646 18 19 58.07 -07 43 35.7 14.6 N EM051J47
PK09L020 C2009 06 24.56286 18 20 10.45 -07 20 19.8 16.4 N EM051D32
PK09L020 C2009 06 24.56424 18 20 10.55 -07 20 19.3 16.3 N EM051D32
PK09L020 C2009 06 24.56561 18 20 10.50 -07 20 16.9 16.4 N EM051D32
PK09L020 C2009 06 24.56700 18 20 10.63 -07 20 11.9 16.3 N EM051D32
PK09L020 C2009 06 24.56838 18 20 10.64 -07 20 08.8 16.5 N EM051D32
PK09L020 C2009 06 24.56976 18 20 10.69 -07 20 05.9 16.4 N EM051D32
PK09L020 C2009 06 24.57113 18 20 10.78 -07 20 01.8 16.4 N EM051D32
PK09L020 C2009 06 24.57252 18 20 10.77 -07 19 58.8 16.4 N EM051D32
PK09L020 C2009 06 24.57390 18 20 10.81 -07 19 54.3 15.3 N EM051D32
PK09L020 C2009 06 24.57528 18 20 10.73 -07 19 52.3 16.4 N EM051D32
PK09L020 C2009 06 24.60924 18 20 11.13 -07 18 30.4 13.8 T EM051D29
PK09L020 C2009 06 24.61584 18 20 10.78 -07 18 14.9 17.0 N EM051D93
PK09L020 C2009 06 24.61719 18 20 10.81 -07 18 11.4 16.9 N EM051D93
PK09L020 C2009 06 24.61796 18 20 10.81 -07 18 09.7 17.0 N EM051D93
PK09L020 C2009 06 24.61850 18 20 11.20 -07 18 08.4 13.6 T EM051D29
PK09L020 C2009 06 24.61874 18 20 10.82 -07 18 07.5 17.0 N EM051D93
PK09L020 C2009 06 24.62103 18 20 10.86 -07 18 02.1 16.9 N EM051D93
PK09L020 C2009 06 24.62177 18 20 11.26 -07 18 01.1 13.7 T EM051D29
PK09L020 C2009 06 24.62974 18 20 11.49 -07 17 39.9 13.8 T EM051D29
PK09L020 C2009 06 24.63296 18 20 11.39 -07 17 33.0 13.8 T EM051D29
PK09L020 C2009 06 24.64059 18 20 11.56 -07 17 12.5 13.3 T EM051D29
PK09L020 C2009 06 24.64428 18 20 11.68 -07 17 04.1 13.8 T EM051D29
PK09L020 C2009 06 24.65216 18 20 11.80 -07 16 43.2 13.7 T EM051D29
PK09L020 C2009 06 24.97553 18 20 19.00 -07 03 26.2 14.6 N EM051J47
PK09L020 C2009 06 24.98231 18 20 19.09 -07 03 09.8 14.6 N EM051J47
PK09L020 C2009 06 24.99084 18 20 19.19 -07 02 49.2 14.5 N EM051J47
PK09L020 C2009 06 24.99506 18 20 18.70 -07 02 44.8 15.9 N EM051510
PK09L020 C2009 06 25.00055 18 20 18.82 -07 02 33.0 15.3 N EM051510
PK09L020 C2009 06 25.03627 18 20 19.05 -07 00 58.4 15.2 N EM051B40
PK09L020 C2009 06 25.04119 18 20 19.12 -07 00 46.6 EM051B40
PK09L020 C2009 06 25.04516 18 20 19.18 -07 00 38.4 EM051B40
PK09L020 C2009 06 25.66683 18 20 32.31 -06 35 40.7 17.1 N EM051D93
PK09L020 C2009 06 25.66760 18 20 32.33 -06 35 38.7 17.0 N EM051D93
PK09L020 C2009 06 25.66837 18 20 32.38 -06 35 38.2 16.5 N EM051D93
PK09L020 C2009 06 25.67153 18 20 32.34 -06 35 31.2 17.0 N EM051D93
PK09L020 C2009 06 25.67242 18 20 32.40 -06 35 27.7 17.0 N EM051D93
PK09L020 C2009 06 25.67330 18 20 32.42 -06 35 25.4 17.1 N EM051D93
PK09L020 C2009 06 25.84566 18 20 37.29 -06 28 35.1 14.8 N EM051B40
PK09L020 C2009 06 25.84764 18 20 37.34 -06 28 30.3 14.3 N EM051B40
PK09L020 C2009 06 25.84961 18 20 37.36 -06 28 25.9 14.6 N EM051B40
PK09L020 C2009 06 26.00446 18 20 39.78 -06 22 20.0 14.4 N EM051J53
PK09L020 C2009 06 26.00623 18 20 39.80 -06 22 15.9 14.4 N EM051J53
PK09L020 C2009 06 26.00800 18 20 39.82 -06 22 11.7 14.4 N EM051J53
PK09L020 C2009 06 26.15433 18 20 43.40 -06 16 30.6 16.1 N EM051750
PK09L020 C2009 06 26.17975 18 20 43.77 -06 15 30.7 15.9 N EM051750
PK09L020 C2009 06 26.19057 18 20 44.01 -06 15 02.9 14.9 N EM051H45
PK09L020 C2009 06 26.19160 18 20 44.02 -06 15 00.4 15.0 N EM051H45
PK09L020 C2009 06 26.19505 18 20 44.07 -06 14 52.5 14.9 N EM051H45
PK09L020 C2009 06 26.19661 18 20 44.09 -06 14 49.1 15.0 N EM051H45
PK09L020 C2009 06 26.19885 18 20 44.11 -06 14 43.5 15.0 N EM051H45
PK09L020 C2009 06 26.20030 18 20 44.15 -06 14 40.2 14.9 N EM051H45
PK09L020 C2009 06 26.20155 18 20 44.16 -06 14 37.3 15.0 N EM051H45
PK09L020 C2009 06 26.29931 18 20 45.28 -06 10 48.6 14.5 N EM051H47
PK09L020 C2009 06 26.30837 18 20 45.38 -06 10 27.4 14.4 N EM051H47
PK09L020 C2009 06 26.31789 18 20 45.47 -06 10 05.1 14.7 N EM051H47
PK09L020 C2009 06 26.56111 18 20 51.52 -06 00 42.8 EM051367
PK09L020 C2009 06 26.56285 18 20 51.54 -06 00 39.3 EM051367
PK09L020 C2009 06 26.56458 18 20 51.53 -06 00 34.9 15.2 T EM051367
PK09L020 C2009 06 26.63066 18 20 52.16 -05 58 03.6 16.8 N EM051D93
PK09L020 C2009 06 26.63143 18 20 52.15 -05 58 01.9 16.8 N EM051D93
PK09L020 C2009 06 26.63220 18 20 52.17 -05 58 00.3 17.0 N EM051D93
PK09L020 C2009 06 26.63996 18 20 52.37 -05 57 41.4 15.4 N EM051900
PK09L020 C2009 06 26.64352 18 20 52.41 -05 57 33.3 EM051900
PK09L020 C2009 06 26.88075 18 20 58.11 -05 48 32.8 15.0 N EM051213
PK09L020 C2009 06 26.88132 18 20 58.13 -05 48 30.9 15.0 N EM051213
PK09L020 C2009 06 26.88247 18 20 58.14 -05 48 28.4 14.9 N EM051213
PK09L020 C2009 06 26.94028 18 20 58.94 -05 46 17.4 16.3 N EM051B49
PK09L020 C2009 06 26.94437 18 20 58.97 -05 46 08.1 16.4 N EM051B49
PK09L020 C2009 06 26.94864 18 20 59.00 -05 45 57.6 15.5 N EM051B49
PK09L020 C2009 06 26.96660 18 20 59.64 -05 45 13.0 14.7 N EM051J47
PK09L020 C2009 06 26.97486 18 20 59.73 -05 44 54.3 14.8 N EM051J47
PK09L020 C2009 06 26.97561 18 20 59.46 -05 44 57.6 14.7 N EM051J59
PK09L020 C2009 06 26.97918 18 20 59.41 -05 44 48.5 14.8 N EM051939
PK09L020 C2009 06 26.98211 18 20 59.45 -05 44 41.9 14.8 N EM051939
PK09L020 C2009 06 26.98649 18 20 59.51 -05 44 32.0 14.8 N EM051939
PK09L020 C2009 06 26.98843 18 20 59.89 -05 44 23.8 14.8 N EM051J47
PK09L020 C2009 06 26.99139 18 20 59.67 -05 44 21.9 14.7 N EM051J59
PK09L020 C2009 06 27.00497 18 20 59.83 -05 43 50.8 14.7 N EM051J59
PK09L020 C2009 06 27.02241 18 20 59.97 -05 43 10.5 14.9 N EM051232
PK09L020 C2009 06 27.02637 18 20 59.97 -05 43 01.5 14.9 N EM051232
PK09L020 C2009 06 27.03031 18 20 59.99 -05 42 52.6 14.9 N EM051232
PK09L020 C2009 06 27.32891 18 21 05.56 -05 31 36.9 14.4 N EM051H47
PK09L020 C2009 06 27.33769 18 21 05.68 -05 31 17.8 14.7 N EM051H47
PK09L020 C2009 06 27.34039 18 21 05.72 -05 31 10.5 14.6 N EM051H47
PK09L020 C2009 06 27.38228 18 21 06.47 -05 29 37.9 EM051H06
PK09L020 C2009 06 27.38448 18 21 06.52 -05 29 33.6 15.3 N EM051H06
PK09L020 C2009 06 27.97818 18 21 19.54 -05 07 40.4 14.3 N EM051J47
PK09L020 C2009 06 27.98559 18 21 19.57 -05 07 25.0 14.6 N EM051J47
PK09L020 C2009 06 27.99208 18 21 19.65 -05 07 10.6 14.6 N EM051J47
PK09L020 C2009 06 28.00132 18 21 19.30 -05 06 55.2 14.7 N EM051A77
PK09L020 C2009 06 28.04064 18 21 19.66 -05 05 29.8 15.9 N EM051B09
PK09L020 C2009 06 28.04806 18 21 19.76 -05 05 13.7 15.6 N EM051B09
PK09L020 C2009 06 28.09584 18 21 20.54 -05 03 27.7 15.5 N EM051J10
PK09L020 C2009 06 28.10637 18 21 20.70 -05 03 03.8 15.7 N EM051J10
PK09L020 C2009 06 28.21358 18 21 23.28 -04 58 45.6 EM051I21
PK09L020 C2009 06 28.22094 18 21 23.27 -04 58 28.7 EM051I21
PK09L020 C2009 06 28.24137 18 21 23.48 -04 57 46.2 EM051I21
PK09L020 C2009 06 29.32885 18 21 44.47 -04 19 54.5 15.0 N EM051H45
PK09L020 C2009 06 29.33058 18 21 44.49 -04 19 50.8 15.1 N EM051H45
PK09L020 C2009 06 29.33276 18 21 44.52 -04 19 46.3 15.0 N EM051H45
PK09L020 C2009 06 29.33452 18 21 44.54 -04 19 42.7 15.0 N EM051H45
PK09L020 C2009 06 29.33704 18 21 44.57 -04 19 37.6 15.0 N EM051H45
PK09L020 C2009 06 29.33903 18 21 44.59 -04 19 33.3 13.6 T EM051H45
PK09L020 C2009 06 29.34067 18 21 44.61 -04 19 30.1 13.5 T EM051H45
Observer details:
212 Observatorio La Dehesilla. Observer I. Almendros. 0.30-m f/10
Schmidt-Cassegrain + CCD.
213 Observatorio Montcabre. Observer R. Naves. Measurer M. Campas. 0.30-m
f/10 Schmidt-Cassegrain + CCD.
232 Masquefa Observatory. Observer E. Reina. 0.25-m f/3.3 Schmidt-Cassegrain
+ CCD.
367 Yatsuka. Observer H. Abe. 0.26-m f/6.0 reflector + CCD.
493 Calar Alto. Observers S. Mottola, G. Hahn, U. Carsenty. Measurer G. Hahn.
1.23-m reflector + CCD.
510 Siegen. Observers M. Jung, H. Bill. Measurer H. Bill. 0.30-m f/5
reflector + CCD.
585 Kiev comet station. Observers A. Baransky, K. Churyumov, V. Ponomarenko.
0.7-m f/4 reflector + CCD.
750 Hobbs Observatory, Fall Creek. Observer N. Moritz. Measurer R. Elliott.
0.6-m f/5 reflector + CCD.
850 Cordell-Lorenz Observatory, Sewanee. Observers D. T. Durig, P. Kharel.
Measurers D. T. Durig, S. A. N. Agyemang. 0.30-m f/2.8 Schmidt-Cassegrain
+ CCD.
900 Moriyama. Observer Y. Ikari. 0.26-m f/7.0 reflector + CCD.
926 Tenagra II Observatory. Observer M. Schwartz. Measurer L. Elenin.
0.81-m f/7 Ritchey-Chretien + CCD.
939 Observatorio Rodeno. Observer J. Castellano. 0.20-m f/10
Schmidt-Cassegrain + CCD.
A02 Masia Cal Maciarol Modul 8. Observers J. L. Salto, A. Salto. Measurer
J. L. Salto. 0.25-m f/7.2 Schmidt-Cassegrain + CCD.
A77 Observatoire Chante-Perdrix, Dauban. Observers C. Rinner, F. Kugel.
Measurer F. Kugel. 0.5-m f/3 reflector + CCD.
B09 Capannoli. Observer P. Bacci. 0.25-m f/10 Schmidt-Cassegrain + CCD.
B40 Skylive Observatory, Catania. Observers P. Camilleri, E. Guido,
E. Prosperi, G. Sostero. Measurer E. Prosperi. 0.3-m f/6
Schmidt-Cassegrain + CCD.
B49 Paus Observatory, Sabadell. Observer J. Camarasa. 0.25-m f/4 Newtonian
reflector + CCD.
B74 Santa Maria de Montmagastrell. Observer J. M. Bosch. 0.31-m f/4.9
Newtonian reflector + CCD.
B96 Brixiis Observatory, Kruibeke. Observer E. Bryssinck. 0.28-m f/10
Schmidt-Cassegrain + CCD.
D29 Purple Mountain Observatory, XuYi Station. Observers H. B. Zhao,
J. S. Yao, Y. Z. Wu, M. Wang, G. T. Zhaori, R. Q. Hong, L. F. Hu.
Measurers H. B. Zhao, H. Lu, G. T. Zhaori, Y. Xia, S. Jianchun. 1.04-m
f/1.8 Schmidt + CCD.
D32 JiangNanTianChi Observatory, Mt. Getianling. Observers T. Chen, G.-T. Gao.
Measurer T. Chen. 0.25-m f/7.6 Ritchey-Chretien + CCD.
D93 Sendai Astronomical Observatory. Observer M. Koishikawa. 1.3-m f/4.85
reflector + CCD.
H06 RAS Observatory, Mayhill. Observer H. Sato. 0.25-m f/3.4 reflector + CCD.
H45 Arkansas Sky Obs., Petit Jean Mountain South. Observer P. C. Sherrod.
0.51-m f/4.3 astrograph + CCD.
H47 Vicksburg. Observer C. Bell. 0.3-m f/4.7 Schmidt-Cassegrain + CCD.
I21 El Condor Observatory, Cordoba. Observer W. Robledo. Measurer
C. Montivero. 0.20-m f/3.9 Schmidt-Cassegrain + CCD.
J10 Alicante. Observer M. Rodriguez de Viguri. 0.20-m f/5 reflector + CCD.
J24 Observatorio Altamira. Observer J. F. Hernandez. 0.4-m f/10
Schmidt-Cassegrain + CCD.
J47 Observatorio Nazaret. Observer G. Muler. 0.30-m Schmidt-Cassegrain + CCD.
J53 Posadas. Observer R. Benavides. 0.28-m f/5.0 Schmidt-Cassegrain + CCD.
J59 Observatorio Linceo, Santander. Observer J. Temprano. 0.25-m f/3.3
Schmidt-Cassegrain + CCD.
Orbital elements:
P/2009 L2 (Yang-Gao)
T 2009 May 21.712 TT MPC
q 1.29714 (2000.0) P Q
n 0.153473 Peri. 346.918 -0.394121 +0.877120
a 3.45501 Node 259.318 -0.816075 -0.471344
e 0.62456 Incl. 16.219 -0.422718 +0.092168
P 6.42
From 454 observations 2009 June 15-29.
Ephemeris:
P/2009 L2 (Yang-Gao)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2009 06 28 18 21.32 -05 06.7 0.367 1.370 161.8 13.4 14.2
2009 07 03 18 22.91 -02 22.8 0.393 1.390 158.5 15.5 14.4
2009 07 08 18 24.54 -00 12.9 0.423 1.412 155.3 17.5 14.6
2009 07 13 18 26.34 +01 26.4 0.456 1.436 152.1 19.3 14.9
2009 07 18 18 28.41 +02 39.0 0.492 1.461 149.1 20.9 15.1
2009 07 23 18 30.84 +03 28.8 0.532 1.488 146.2 22.3 15.4
2009 07 28 18 33.70 +03 59.9 0.575 1.516 143.4 23.5 15.6
2009 08 02 18 37.02 +04 15.9 0.620 1.546 140.7 24.6 15.9
2009 08 07 18 40.79 +04 20.1 0.668 1.576 138.1 25.4 16.1
2009 08 12 18 45.00 +04 15.1 0.720 1.608 135.5 26.2 16.3
2009 08 17 18 49.63 +04 03.1 0.774 1.640 132.9 26.9 16.6
2009 08 22 18 54.67 +03 46.1 0.831 1.674 130.4 27.4 16.8
2009 08 27 19 00.11 +03 25.8 0.890 1.708 127.8 27.9 17.1
Brian G. Marsden (C) Copyright 2009 MPC M.P.E.C. 2009-M51
Read MPEC 2009-M50
Read MPEC 2009-M52
