MPEC 2022-N81 : COMET P/2012 O3 = P/2022 G2 (McNaught)
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M.P.E.C. 2022-N81 Issued 2022 July 12, 03:15 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 P/2012 O3 = P/2022 G2 (McNaught) Comet P/2012 O3 has been detected in images taken on Apr. 10 UT by H. Sato at iTelescope Observatory, Siding Spring (Q62); and on June. 28 by Pan-STARRS 2 (F52). Observations: PK22G020 KC2022 04 10.79586 21 57 30.66 -22 48 32.7 EN081Q62 PK22G020 KC2022 04 10.80118 21 57 31.52 -22 48 26.3 20.9 G EN081Q62 PK22G020* C2022 06 28.58263801 00 07.059+07 25 52.67 20.98wUEN081F52 PK22G020 C2022 06 28.58777201 00 07.620+07 26 00.01 20.80wUEN081F52 PK22G020 C2022 06 28.59282101 00 08.151+07 26 07.15 20.85wUEN081F52 PK22G020 C2022 06 28.59786701 00 08.682+07 26 14.54 20.80wUEN081F52 Observer details: F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, I. Smith. Measurers K. Chambers, S. Chastel, T. de Boer, J. Fairlamb, H. Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD. Q62 iTelescope Observatory, Siding Spring. Observer H. Sato. 0.51-m f/6.8 astrograph + CCD + f/4.5 focal reducer. Orbital elements: P/2012 O3 (McNaught) Epoch 2012 Aug. 21.0 TT = JDT 2456160.5 T 2012 Aug. 16.07135 TT Rudenko q 1.5994446 (2000.0) P Q n 0.10140589 Peri. 343.64957 +0.77777059 +0.61867518 a 4.5543591 Node 336.99636 -0.54020166 +0.56769377 e 0.6488102 Incl. 16.49663 -0.32133329 +0.54310663 P 9.72 From 320 observations 2012 July 23-2022 June 28, mean residual 0".6. P/2012 O3 (McNaught) Epoch 2022 May 21.0 TT = JDT 2459720.5 T 2022 May 29.64482 TT Rudenko q 1.6139439 (2000.0) P Q n 0.10076606 Peri. 344.75248 +0.78336589 +0.61093927 a 4.5736177 Node 336.41406 -0.53616781 +0.57107748 e 0.6471188 Incl. 16.61577 -0.31442322 +0.54829164 P 9.78 From 320 observations 2012 July 23-2022 June 28, mean residual 0".6. P/2012 O3 (McNaught) Epoch 2022 Aug. 9.0 TT = JDT 2459800.5 T 2022 May 29.63943 TT Rudenko q 1.6139188 (2000.0) P Q n 0.10072836 Peri. 344.74876 +0.78332243 +0.61099565 a 4.5747590 Node 336.41375 -0.53621094 +0.57104730 e 0.6472123 Incl. 16.61503 -0.31445794 +0.54826025 P 9.78 From 310 observations 2012 July 23-2022 June 28, mean residual 0".5. P/2012 O3 (McNaught) Epoch 2032 Feb. 18.0 TT = JDT 2463280.5 T 2032 Feb. 4.29459 TT Rudenko q 1.6203330 (2000.0) P Q n 0.10078203 Peri. 344.07232 +0.77313347 +0.62354858 a 4.5731347 Node 336.14453 -0.54610530 +0.56147312 e 0.6456844 Incl. 16.66516 -0.32254246 +0.54399918 P 9.78 From 320 observations 2012 July 23-2022 June 28, mean residual 0".6. P/2012 O3 (McNaught) Epoch 2022 Aug. 9.0 TT = JDT 2459800.5 T 2022 May 29.63944 TT Rudenko q 1.6139191 (2000.0) P Q n 0.10072834 Peri. 344.74885 +0.78332292 +0.61099495 a 4.5747595 Node 336.41371 -0.53621055 +0.57104750 e 0.6472122 Incl. 16.61505 -0.31445738 +0.54826082 P 9.78 From 320 observations 2012 July 23-2022 June 28, mean residual 0".6. Ephemeris: Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2 2022 06 12 00 28 00.0 +00 46 18 1.5731 1.6205 74.0 37.0 19.6 ... 2022 06 27 00 57 13.1 +06 48 16 1.4942 1.6431 79.3 37.4 19.5 ... 2022 07 05 01 11 26.1 +09 56 47 1.4546 1.6614 82.4 37.3 19.5 ... 2022 07 11 01 21 23.2 +12 15 13 1.4259 1.6779 85.0 37.1 19.5 2022 07 12 01 22 58.9 +12 38 01 1.4212 1.6809 85.5 37.1 19.5 2022 07 13 01 24 33.5 +13 00 45 1.4165 1.6839 85.9 37.0 19.5 ... 2022 07 19 01 33 36.4 +15 15 16 1.3889 1.7033 88.8 36.6 19.5 ... 2022 07 27 01 44 27.6 +18 09 25 1.3531 1.7324 92.9 35.8 19.5 ... 2022 08 11 02 00 20.2 +23 16 55 1.2906 1.7957 101.7 33.5 19.6 M. P. C. Staff (C) Copyright 2022 MPC M.P.E.C. 2022-N81


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