85713 (1998 SS49)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6388279291 ± 9.76e-09
Semi-major axis (a)1.9234610632 AU ± 2.56e-10
Inclination (i)10.78514118° ± 2.02e-06
Long. of Asc. Node (Ω)40.94920425° ± 3.86e-06
Arg. of Perihelion (ω)103.13358943° ± 4.25e-06
Mean Anomaly (M)27.38773996° ± 4.24e-07
Mean Motion (n)0.3694768031°/day ± 7.39e-11
Perihelion dist (q)0.69470042 AU ± 1.88e-08
Aphelion dist (Q)3.15222171 AU ± 1.88e-08
Orbital Period2.66762697 yr ± 5.33e-10
Physical Parameters
H (abs. magnitude)15.77
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.234″
Uncertainty0
Orbit TypeApollo
MOID0.004653 AU
Observations Used1372
Radar Obs Used3
Oppositions15
Arc Total1998-2024
First Observation Used1998-09-29
Last Observation Used2024-10-22
Observations (1498)
Date Type RA Dec Mag Band Observatory
2008-08-06 14:58:34 C 23 24 17.38 -19 15 40.7 r E12
2008-08-23 13:04:53 C 23 07 14.77 -21 27 40.1 r E12
2008-08-23 13:17:34 C 23 07 14.19 -21 27 43.8 r E12
2008-08-23 13:30:17 C 23 07 13.54 -21 27 48.4 r E12
2008-08-23 13:42:59 C 23 07 12.79 -21 27 51.9 r E12
2010-05-09 16:31:56 S 21 38 40.88 -25 59 14.5 L C51
2010-05-09 19:42:27 S 21 38 45.46 -25 59 30.1 L C51
2010-05-09 22:52:59 S 21 38 50.07 -25 59 46.3 L C51
2010-05-10 02:03:30 S 21 38 54.79 -26 00 03.2 L C51
2010-05-10 03:38:51 S 21 38 57.16 -26 00 10.8 L C51
2010-05-10 05:14:01 S 21 38 59.354 -26 00 21.82 L C51
2010-05-10 06:49:22 S 21 39 01.625 -26 00 29.52 L C51
2010-05-10 09:59:53 S 21 39 06.182 -26 00 45.94 L C51
2010-05-10 11:35:03 S 21 39 08.40 -26 00 55.1 L C51
2010-05-10 13:10:24 S 21 39 10.65 -26 01 03.0 L C51
2010-05-10 16:20:55 S 21 39 15.394 -26 01 20.64 L C51
2010-05-10 19:31:26 S 21 39 19.63 -26 01 38.3 L C51
2010-05-10 22:41:57 S 21 39 24.03 -26 01 55.5 L C51
2011-09-20 08:36:21 C 00 08 54.34 -12 58 24.2 r 703
2011-09-20 08:46:14 C 00 08 53.77 -12 58 28.5 r 703
2011-09-20 08:56:03 C 00 08 53.08 -12 58 31.0 r 703
2011-09-20 09:05:51 C 00 08 52.40 -12 58 33.2 r 703
2011-09-23 06:26:28 C 00 04 37.45 -13 21 25.8 r 703
2011-09-23 06:38:02 C 00 04 36.80 -13 21 28.3 r 703
2011-09-23 06:49:26 C 00 04 36.01 -13 21 32.4 r 703
2011-09-23 07:00:45 C 00 04 35.36 -13 21 37.8 r 703
2011-09-25 10:32:38 C 00 01 21.621 -13 37 51.17 L F51
2011-09-25 10:49:22 C 00 01 20.541 -13 37 56.18 L F51
2011-10-19 04:23:32 C 23 26 43.40 -15 31 30.9 r 703
2011-10-19 04:30:55 C 23 26 43.04 -15 31 31.7 r 703
2011-10-19 04:38:21 C 23 26 42.68 -15 31 31.8 r 703
2011-10-19 04:45:42 C 23 26 42.25 -15 31 33.2 r 703
2011-10-31 03:11:12 C 23 13 52.82 -15 31 19.9 r 703
2011-10-31 03:18:33 C 23 13 52.57 -15 31 19.4 r 703
2011-10-31 03:25:50 C 23 13 52.32 -15 31 18.9 r 703
2011-10-31 03:33:06 C 23 13 52.06 -15 31 19.2 r 703
2011-11-18 03:20:36 C 23 04 16.59 -14 23 05.2 19.5 c 704
2011-11-18 03:38:57 C 23 04 16.34 -14 23 00.0 19.9 c 704
2011-11-18 04:34:16 C 23 04 15.84 -14 22 46.6 19.6 c 704
2011-11-22 04:55:35 C 23 03 46.490 -13 58 12.45 L F51
2011-11-22 05:10:54 C 23 03 46.440 -13 58 08.24 L F51
2013-08-24 09:45:50 C 21 47 59.747 -29 35 23.64 L F51
2013-08-24 10:01:01 C 21 47 58.938 -29 35 26.22 L F51
2013-09-01 09:14:47 C 21 38 09.279 -30 02 34.53 L F51
2013-09-01 09:29:27 C 21 38 08.550 -30 02 36.16 L F51
2013-09-01 09:44:07 C 21 38 07.782 -30 02 37.64 L F51
2013-09-01 09:58:02 C 21 38 07.080 -30 02 39.18 L F51
2014-08-31 13:10:33 C 03 33 02.943 +13 22 06.37 L F51
2014-08-31 13:29:14 C 03 33 04.181 +13 22 12.41 L F51
2014-08-31 13:47:50 C 03 33 05.406 +13 22 18.40 L F51
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2014-11-21 11:44:00 193523879.3 4 us 2380 -1 -1
2014-11-21 12:31:00 193610727.44 1 us 2380 -1 -1
2022-11-18 07:50:00 146933763 10 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)