MPEC 2023-P35 : COMET P/2015 XG422 (PANSTARRS)
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M.P.E.C. 2023-P35 Issued 2023 August 7, 23:27 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. They are published
on behalf of Division F 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 https://www.minorplanetcenter.net/ ISSN 1523-6714
COMET P/2015 XG422 (PANSTARRS)
K. Ly reports cometary activity of 2015 XG422 (discovered by Pan-STARRS 1
on Dec. 13, 2015 UT) in archival image taken by Subaru Telescope (T09) on
Mar. 3, 2016 UT, noting a condendsed 2".2 coma and a broad 7" tail at position
angle 280 - 320 deg. Additional reports of cometary features are as follows:
OC Date Reporter Coma Tail PA Exposures
Q55 2016-03-05 K. Ly 3" 2x100s
T09 2016-03-07 K. Ly 2".2 10" 280-320 1x150s
W86 2016-03-10 K. Ly 1".8 9" 280 4x240s
F51 2016-04-29 R. Weryk 0".4 4x45s
W84 2016-08-05 K. Ly 3" 1x30s
W84 2016-08-14 K. Ly 4" 1x30s
F51 2017-05-26 R. Weryk 0".4 4" 245 4x45s
Observations:
PK15Xg2G C2010 09 13.47259800 17 58.302+01 25 48.55 23.02GVEP035F51
PK15Xg2G C2010 09 13.48753600 17 57.843+01 25 44.05 21.76GVEP035F51
PK15Xg2G C2010 09 15.48893800 17 00.183+01 14 45.96 23.20GVEP035F51
PK15Xg2G C2010 09 15.49813900 16 59.906+01 14 42.98 22.64GVEP035F51
PK15Xg2G C2010 09 15.50735200 16 59.619+01 14 40.15 22.72GVEP035F51
PK15Xg2G C2010 09 16.44039200 16 32.478+01 09 31.18 21.71GVEP035F51
PK15Xg2G C2010 09 16.45171200 16 32.154+01 09 27.74 21.55GVEP035F51
PK15Xg2G C2010 09 16.46283100 16 31.804+01 09 23.71 23.45GVEP035F51
PK15Xg2G C2010 09 16.47387200 16 31.484+01 09 20.00 22.93GVEP035F51
PK15Xg2G C2010 10 03.39946500 08 07.756-00 24 31.30 22.08GVEP035F51
PK15Xg2G C2010 10 03.41401300 08 07.349-00 24 35.74 22.25GVEP035F51
PK15Xg2G C2010 10 03.42802500 08 06.923-00 24 40.53 22.20GVEP035F51
PK15Xg2G* C2015 12 13.63282 11 15 03.244-04 43 19.99 22.4 wLEP035F51
PK15Xg2G C2015 12 13.63797 11 15 03.445-04 43 20.49 21.9 wLEP035F51
PK15Xg2G C2015 12 13.64312 11 15 03.610-04 43 21.59 22.0 wLEP035F51
PK15Xg2G C2015 12 13.64828 11 15 03.800-04 43 22.52 22.0 wLEP035F51
PK15Xg2G /C2015 12 27.28247411 22 06.24 -05 15 32.3 20.9 zWEP035W84
PK15Xg2G C2016 02 10.47962 11 24 15.779-03 56 55.10 21.2 wLEP035F51
PK15Xg2G C2016 02 10.49070 11 24 15.543-03 56 51.26 21.1 wLEP035F51
PK15Xg2G C2016 02 10.50179 11 24 15.309-03 56 47.61 21.2 wLEP035F51
PK15Xg2G C2016 02 10.51288 11 24 15.073-03 56 43.85 21.3 wLEP035F51
PK15Xg2G C2016 02 28.53256911 16 14.98 -01 51 04.2 21.0 gWEP035Q55
PK15Xg2G C2016 02 28.53397011 16 14.98 -01 51 03.6 20.5 rWEP035Q55
PK15Xg2G C2016 02 29.41953 11 15 46.529-01 43 47.95 20.9 rLEP035F51
PK15Xg2G C2016 02 29.43128 11 15 46.153-01 43 42.08 21.0 rLEP035F51
PK15Xg2G C2016 02 29.44304 11 15 45.755-01 43 36.20 20.9 rLEP035F51
PK15Xg2G C2016 03 05.55539411 12 57.16 -00 59 46.9 20.5 gWEP035Q55
PK15Xg2G C2016 03 05.55679411 12 57.11 -00 59 46.2 20.1 rWEP035Q55
PK15Xg2G C2016 03 05.55818311 12 57.08 -00 59 45.4 20.5 gWEP035Q55
PK15Xg2G 2C2016 03 07.44993311 11 53.24 -00 43 02.6 20.2 TWEP035T09
PK15Xg2G 2C2016 03 07.55363411 11 49.58 -00 42 07.0 20.2 TWEP035T09
PK15Xg2G 2C2016 03 09.36257011 10 48.55 -00 25 50.5 19.7 TWEP035T09
PK15Xg2G 2C2016 03 09.43459411 10 46.01 -00 25 11.5 19.7 TWEP035T09
PK15Xg2G 5C2016 03 10.23716811 10 18.74 -00 17 51.4 19.9 TWEP035W86
PK15Xg2G 5C2016 03 10.23948611 10 18.63 -00 17 49.8 20.1 TWEP035W86
PK15Xg2G 5C2016 03 10.24378311 10 18.51 -00 17 47.5 19.8 TWEP035W86
PK15Xg2G 5C2016 03 10.24701311 10 18.40 -00 17 46.0 19.8 TWEP035W86
PK15Xg2G C2016 03 11.38380 11 09 39.92 -00 07 27.4 19.7 VqEP035G96
PK15Xg2G C2016 03 11.38783 11 09 39.73 -00 07 25.5 19.6 VqEP035G96
PK15Xg2G C2016 03 11.39185 11 09 39.57 -00 07 22.7 19.6 VqEP035G96
PK15Xg2G C2016 03 11.39586 11 09 39.44 -00 07 20.7 19.7 VqEP035G96
PK15Xg2G C2016 03 11.40716 11 09 39.184-00 07 13.95 20.1 wLEP035F51
PK15Xg2G C2016 03 11.42033 11 09 38.738-00 07 06.52 20.1 wLEP035F51
PK15Xg2G C2016 03 11.43351 11 09 38.275-00 06 59.23 20.2 wLEP035F51
PK15Xg2G C2016 03 11.44668 11 09 37.806-00 06 51.99 20.2 wLEP035F51
PK15Xg2G C2016 03 16.42317 11 06 51.20 +00 39 02.7 20.0 VoEP035691
PK15Xg2G C2016 03 16.44180 11 06 50.58 +00 39 13.7 20.2 VoEP035691
PK15Xg2G C2016 03 16.46043 11 06 49.96 +00 39 23.6 20.0 VoEP035691
PK15Xg2G C2016 03 31.26602 10 59 33.83 +02 54 23.7 19.7 VqEP035G96
PK15Xg2G C2016 03 31.27019 10 59 33.71 +02 54 26.0 19.6 VqEP035G96
PK15Xg2G C2016 03 31.27435 10 59 33.62 +02 54 28.2 19.3 VqEP035G96
PK15Xg2G C2016 03 31.27851 10 59 33.48 +02 54 30.5 19.6 VqEP035G96
PK15Xg2G C2016 04 29.25829 10 54 26.417+06 18 26.12 20.3 wLEP035F51
PK15Xg2G C2016 04 29.27031 10 54 26.465+06 18 29.83 20.2 wLEP035F51
PK15Xg2G C2016 04 29.28232 10 54 26.522+06 18 33.26 20.3 wLEP035F51
PK15Xg2G C2016 04 29.29429 10 54 26.568+06 18 36.97 20.3 wLEP035F51
PK15Xg2G /C2016 08 04.97040412 13 38.60 +04 09 24.7 19.4 iWEP035W84
PK15Xg2G /C2016 08 05.97056112 14 56.33 +04 03 48.6 19.4 iWEP035W84
PK15Xg2G /C2016 08 14.97998712 26 51.78 +03 11 34.7 19.6 iWEP035W84
PK15Xg2G /C2016 08 15.96850512 28 11.88 +03 05 40.0 19.6 iWEP035W84
PK15Xg2G C2017 04 20.54879 17 53 57.993+00 57 18.69 20.7 iLEP035F51
PK15Xg2G C2017 04 20.56055 17 53 58.062+00 57 24.25 20.3 iLEP035F51
PK15Xg2G C2017 04 20.57238 17 53 58.144+00 57 30.11 20.6 iLEP035F51
PK15Xg2G C2017 04 20.58423 17 53 58.234+00 57 35.65 20.7 iLEP035F51
PK15Xg2G C2017 05 06.49777 17 53 24.679+02 59 07.23 20.6 iLEP035F51
PK15Xg2G C2017 05 06.50980 17 53 24.550+02 59 12.42 20.6 iLEP035F51
PK15Xg2G C2017 05 06.52178 17 53 24.378+02 59 17.47 20.8 iLEP035F51
PK15Xg2G C2017 06 05.30147 17 40 16.86 +05 30 34.1 19.9 VqEP035G96
PK15Xg2G C2017 06 05.30572 17 40 16.73 +05 30 34.6 19.6 VqEP035G96
PK15Xg2G C2017 06 05.31022 17 40 16.50 +05 30 35.5 20.1 VqEP035G96
PK15Xg2G C2017 06 05.31469 17 40 16.36 +05 30 36.3 19.5 VqEP035G96
Observer details:
691 Steward Observatory, Kitt Peak-Spacewatch. Observer A. F. Tubbiolo.
0.9-m f/3 reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, P.
Minguez, A. Schultz, I. Smith, B. Gibson, T. Goggia, N. Primak, M.
Willman, S. Kahale. Measurers S. Chastel, J. Fairlamb, M. Huber, Y.
Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, L. Denneau, H.
Flewelling, E. Lilly, E. Magnier, C. Waters. 1.8-m Ritchey-Chretien +
CCD.
G96 Mt. Lemmon Survey. Observers A. R. Gibbs, G. J. Leonard, R. G. Matheny.
Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A.
Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny, R. L.
Seaman, F. C. Shelly. 1.5-m reflector + CCD, 1.5-m reflector + 10K CCD.
Q55 SkyMapper, Siding Spring. Observer . Measurer K. Ly. 1.35-m f/4.79
reflector + CCD.
T09 Subaru Telescope, Maunakea. Observers T. Hamana, M. Hayashi, Y. Hayashi,
I. Kayo, T. Saito. Measurer K. Ly. 8.2-m Subaru reflector + CCD.
W84 Cerro Tololo-DECam. Observers D. Schlegel, E. Schlafly. Measurer K. Ly.
W86 Cerro Tololo-LCO B. Observer T. Lister. Measurer K. Ly. 1.0-m f/8
Ritchey-Chretien + CCD.
Orbital elements:
P/2015 XG422 (PANSTARRS)
Epoch 2016 Nov. 28.0 TT = JDT 2457720.5
T 2016 Dec. 2.09590 TT Rudenko
q 2.9905401 (2000.0) P Q
n 0.10928995 Peri. 43.61647 -0.73531607 +0.67769681
a 4.3326062 Node 178.98612 -0.67687588 -0.73391482
e 0.3097595 Incl. 20.19517 -0.03390156 -0.04578295
P 9.02
From 71 observations 2010 Sept. 13-2017 June 5, mean residual 0".3.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2023 07 08 06 25 00.2 +06 36 34 5.8061 4.8548 18.8 3.9 24.2
...
2023 07 23 06 39 03.6 +06 18 07 5.7204 4.8232 25.5 5.2 24.1
...
2023 07 31 06 46 24.3 +06 03 25 5.6582 4.8061 30.0 6.1 24.1
...
2023 08 06 06 51 48.5 +05 50 15 5.6044 4.7931 33.7 6.7 24.0
2023 08 07 06 52 41.9 +05 47 53 5.5948 4.7910 34.3 6.8 24.0
2023 08 08 06 53 35.2 +05 45 28 5.5851 4.7888 34.9 7.0 24.0
...
2023 08 14 06 58 50.2 +05 29 56 5.5234 4.7758 38.8 7.6 24.0
...
2023 08 22 07 05 36.9 +05 06 37 5.4323 4.7583 44.1 8.5 23.9
...
2023 09 06 07 17 27.5 +04 15 30 5.2372 4.7251 54.6 10.0 23.8
M. P. C. Staff (C) Copyright 2023 MPC M.P.E.C. 2023-P35
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