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
2018-07-10 11:51:10 C 21 19 37.777 -32 24 54.98 U F51
2018-07-10 12:04:12 C 21 19 37.091 -32 24 59.36 U F51
2018-07-10 12:17:11 C 21 19 36.410 -32 25 03.68 U F51
2019-08-08 13:05:25 C 00 44 45.608 -07 57 29.84 U F51
2019-08-08 13:22:20 C 00 44 45.423 -07 57 33.17 U F51
2019-08-08 13:39:14 C 00 44 45.235 -07 57 36.55 U F51
2019-08-08 13:56:09 C 00 44 45.042 -07 57 39.97 U F51
2019-08-09 12:58:31 C 00 44 30.598 -08 02 20.76 U F52
2019-08-09 13:14:24 C 00 44 30.402 -08 02 24.01 U F52
2019-08-09 13:30:09 C 00 44 30.211 -08 02 27.30 U F52
2019-08-09 13:45:55 C 00 44 30.018 -08 02 30.56 U F52
2019-08-22 13:45:40 C 00 38 29.193 -09 20 36.00 U F52
2019-08-22 14:01:27 C 00 38 28.731 -09 20 40.57 U F52
2019-08-22 14:17:15 C 00 38 28.268 -09 20 45.25 U F52
2019-08-22 14:33:03 C 00 38 27.801 -09 20 49.76 U F52
2019-08-25 12:26:28 C 00 36 23.172 -09 41 47.57 U F52
2019-08-25 12:42:17 C 00 36 22.650 -09 41 52.47 U F52
2019-08-25 13:14:07 C 00 36 21.591 -09 42 02.28 U F52
2019-08-27 07:46:59 C 00 34 57.64 -09 55 20.9 V 703
2019-08-29 09:32:57 C 00 33 11.32 -10 11 23.0 U I41
2019-08-29 10:03:42 C 00 33 10.13 -10 11 32.9 U I41
2019-09-01 07:48:07 C 00 30 27.53 -10 34 44.8 U I41
2019-09-01 09:31:56 C 00 30 23.14 -10 35 19.8 U I41
2019-09-03 08:11:15 C 00 28 25.25 -10 51 14.8 V 703
2019-09-03 08:26:32 C 00 28 24.49 -10 51 21.7 V 703
2019-09-03 08:34:09 C 00 28 24.19 -10 51 23.4 V 703
2019-09-08 23:58:21 C 00 22 03.62 -11 38 48.5 V C95
2019-09-09 00:19:13 C 00 22 02.54 -11 38 56.0 V C95
2019-09-20 07:12:12 C 00 06 56.91 -13 13 18.6 V 703
2019-09-20 07:20:05 C 00 06 56.30 -13 13 21.5 V 703
2019-09-20 07:27:58 C 00 06 55.83 -13 13 24.1 V 703
2019-09-20 07:35:50 C 00 06 55.26 -13 13 27.6 V 703
2019-09-22 08:59:25 C 00 03 54.734 -13 29 40.43 U F51
2019-09-22 09:15:27 C 00 03 53.724 -13 29 45.66 U F51
2019-09-22 09:31:29 C 00 03 52.709 -13 29 50.89 U F51
2019-09-22 09:47:32 C 00 03 51.697 -13 29 56.09 U F51
2019-09-24 09:39:32 C 00 00 53.463 -13 45 09.10 U F51
2019-09-24 09:54:37 C 00 00 52.499 -13 45 13.85 U F51
2019-09-24 10:09:43 C 00 00 51.529 -13 45 18.54 U F51
2019-09-24 10:24:48 C 00 00 50.561 -13 45 23.26 U F51
2019-09-30 05:44:53 C 23 52 01.95 -14 26 00.0 V 703
2019-09-30 05:52:26 C 23 52 01.37 -14 26 02.3 V 703
2019-09-30 06:00:00 C 23 52 00.92 -14 26 03.9 V 703
2019-09-30 06:07:32 C 23 52 00.48 -14 26 06.3 V 703
2019-10-03 05:19:55 C 23 47 29.31 -14 44 16.6 V 703
2019-10-03 05:27:35 C 23 47 28.83 -14 44 18.1 V 703
2019-10-03 05:35:14 C 23 47 28.27 -14 44 20.0 V 703
2019-10-03 05:42:54 C 23 47 27.87 -14 44 21.4 V 703
2019-10-04 11:04:35 C 23 45 36.46 -14 51 14.8 V T08
2019-10-04 11:09:18 C 23 45 36.16 -14 51 16.5 V T08
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)