MPEC 2018-Q36 : COMET C/2018 P5 (PANSTARRS)
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M.P.E.C. 2018-Q36 Issued 2018 Aug. 18, 20:47 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. 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 C/2018 P5 (PANSTARRS)
From images obtained on Aug. 11, Y. Ramanjooloo and R. Wainscoat (F51)
reported that this object was a comet: the object had a FWHM of 1".65 (vs the
stellar 1".5) and a thin tail extending ~5" in P.A. 240. M. Micheli (568,
Aug. 12) reported a FWHM of 1".1 (stellar 0".9) and a ~5" tail in P.A. 240.
Observations:
CK18P050 C2018 06 16.58682521 46 18.373-04 52 08.18 21.7 GVEQ036F51
CK18P050 C2018 06 16.59597521 46 18.425-04 52 07.10 21.9 GVEQ036F51
CK18P050 C2018 06 23.55034321 46 31.752-04 41 17.90 21.8 GVEQ036F51
CK18P050 C2018 06 23.56300321 46 31.746-04 41 16.96 21.5 GVEQ036F51
CK18P050 C2018 06 23.57563621 46 31.724-04 41 15.93 21.8 GVEQ036F51
CK18P050 C2018 06 23.58829221 46 31.690-04 41 15.06 21.9 GVEQ036F51
CK18P050 C2018 07 13.46549521 44 07.549-04 30 17.04 21.7 GVEQ036F51
CK18P050 C2018 07 13.47788321 44 07.375-04 30 17.36 21.5 GVEQ036F51
CK18P050 C2018 07 13.49022721 44 07.183-04 30 17.62 21.2 GVEQ036F51
CK18P050 C2018 07 13.50266021 44 06.995-04 30 17.73 21.2 GVEQ036F51
CK18P050* C2018 08 11.45034 21 34 26.754-05 06 40.89 20.9 wUEQ036F51
CK18P050 C2018 08 11.46145 21 34 26.478-05 06 42.20 21.2 wUEQ036F51
CK18P050 C2018 08 11.47253 21 34 26.204-05 06 43.72 21.1 wUEQ036F51
CK18P050 C2018 08 11.48359 21 34 25.931-05 06 45.27 21.2 wUEQ036F51
CK18P050 _C2018 08 12.38746321 34 04.181-05 08 43.32 21.6 GVEQ036568
CK18P050 _C2018 08 12.38864421 34 04.149-05 08 43.48 21.2 GVEQ036568
CK18P050 _C2018 08 12.38982221 34 04.121-05 08 43.64 21.0 GVEQ036568
CK18P050 9C2018 08 15.41762721 32 50.61 -05 15 36.1 20.0 RqEQ036F65
CK18P050 9C2018 08 15.42058621 32 50.49 -05 15 37.0 20.3 RqEQ036F65
CK18P050 9C2018 08 15.42354421 32 50.41 -05 15 37.5 20.2 RqEQ036F65
CK18P050 9C2018 08 15.42650221 32 50.36 -05 15 37.4 20.0 RqEQ036F65
CK18P050 |C2018 08 16.14434 21 32 33.00 -05 17 16.7 20.6 GUEQ036807
CK18P050 |C2018 08 16.14847 21 32 32.90 -05 17 17.3 20.7 GUEQ036807
CK18P050 |C2018 08 16.15318 21 32 32.77 -05 17 18.0 20.8 GUEQ036807
CK18P050 1C2018 08 16.56933 21 32 22.66 -05 18 16.7 VEQ036Q62
CK18P050 1C2018 08 16.57286 21 32 22.55 -05 18 17.2 VEQ036Q62
CK18P050 1C2018 08 16.57638 21 32 22.46 -05 18 17.5 20.9 VEQ036Q62
CK18P050 KC2018 08 16.92913721 32 13.91 -05 19 11.0 20.8 RSEQ036L01
CK18P050 IC2018 08 16.95103121 32 13.36 -05 19 14.9 20.3 RSEQ036L01
CK18P050 KC2018 08 16.97701 21 32 12.77 -05 19 18.0 19.8 GVEQ036104
CK18P050 KC2018 08 17.00975 21 32 11.99 -05 19 22.2 19.5 GVEQ036104
CK18P050 KC2018 08 17.01935 21 32 11.71 -05 19 25.0 20.9 GVEQ036104
CK18P050 KC2018 08 17.94248 21 31 49.35 -05 21 38.4 19.9 RoEQ036K88
CK18P050 KC2018 08 17.95517 21 31 49.03 -05 21 40.0 20.2 RoEQ036K88
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri, G. Succi.
Measurers P. Bacci, L. Tesi, G. Fagioli. 0.6-m f/4.0 reflector + CCD.
568 Mauna Kea. Observers R. J. Wainscoat, D. Woodworth. Measurers
M. Micheli, R. J. Wainscoat, Y. Ramanjooloo. 3.6-m Canada-France-Hawaii
Telescope + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
0.61-m f/6.5 astrograph + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz,
M. Willman. Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
M. Huber, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R. Weryk, C. Waters.
1.8-m Ritchey-Chretien + CCD.
F65 Haleakala-Faulkes Telescope North. Observer J. D. Armstrong. 2.0-m f/10
reflector + CCD.
K88 GINOP-KHK, Piszkesteto. Observer O. Hanyecz. Measurer K. Sarneczky.
1.02-m Ritchey-Chretien + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, F. Hrzenjak, D. Vida,
E. Pettarin. Measurer D. Vida. 1.0-m f/2.9 reflector + CCD.
Q62 iTelescope Observatory, Siding Spring. Observer H. Sato. 0.51-m f/6.8
astrograph + CCD + f/4.5 focal reducer.
Orbital elements:
C/2018 P5 (PANSTARRS)
Epoch 2019 Mar. 18.0 TT = JDT 2458560.5
T 2019 Feb. 26.26434 TT MPCW
q 4.5757312 (2000.0) P Q
n 0.02166403 Peri. 131.63999 +0.97417981 +0.21306535
a 12.7441223 Node 216.24241 -0.22571751 +0.92648679
e 0.6409536 Incl. 7.25676 +0.00503006 +0.31020216
P 45.50
From 34 observations 2018 June 16-Aug. 17, mean residual 0".3.
C/2018 P5 (PANSTARRS)
Epoch 2064 Oct. 7.0 TT = JDT 2475200.5
T 2064 Oct. 13.58404 TT MPCW
q 4.5650988 (2000.0) P Q
n 0.02162766 Peri. 131.87254 +0.97469577 +0.21070341
a 12.7584038 Node 216.14934 -0.22345976 +0.92712867
e 0.6421889 Incl. 7.26994 +0.00582199 +0.30989758
P 45.57
From 34 observations 2018 June 16-Aug. 17, mean residual 0".3.
C/2018 P5 (PANSTARRS)
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5
T 2019 Feb. 26.26174 TT MPCW
q 4.5758405 (2000.0) P Q
n 0.02171843 Peri. 131.63582 +0.97416235 +0.21314519
a 12.7228296 Node 216.24189 -0.22579342 +0.92646888
e 0.6403441 Incl. 7.25684 +0.00500499 +0.31020082
P 45.38
From 34 observations 2018 June 16-Aug. 17, mean residual 0".3.
Ephemeris:
C/2018 P5 (PANSTARRS)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2018 07 19 21 42 43.6 -04 32 40 3.8951 4.7916 148.6 6.4 20.8
...
2018 08 03 21 37 45.1 -04 50 22 3.7851 4.7643 162.9 3.6 20.7
...
2018 08 11 21 34 37.6 -05 05 42 3.7509 4.7504 169.2 2.3 20.6
...
2018 08 17 21 32 12.2 -05 19 20 3.7372 4.7403 171.2 1.9 20.6
2018 08 18 21 31 48.0 -05 21 45 3.7359 4.7387 171.1 1.9 20.6
2018 08 19 21 31 23.8 -05 24 12 3.7349 4.7370 170.9 1.9 20.6
...
2018 08 25 21 29 01.3 -05 39 35 3.7348 4.7273 167.7 2.6 20.6
...
2018 09 02 21 26 03.8 -06 01 16 3.7504 4.7148 160.7 4.0 20.6
...
2018 09 17 21 21 42.8 -06 42 08 3.8258 4.6927 146.0 6.9 20.6
Gareth V. Williams (C) Copyright 2018 MPC M.P.E.C. 2018-Q36
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