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
1998-09-29 09:00:53 C 04 45 23.76 +19 16 21.3 18.2 a 704
1998-09-29 09:18:32 C 04 45 25.81 +19 16 33.1 18.5 a 704
1998-09-29 09:36:14 C 04 45 27.75 +19 16 41.8 18.5 a 704
1998-09-29 09:53:55 C 04 45 29.57 +19 16 50.6 19.0 a 704
1998-09-29 10:11:43 C 04 45 31.56 +19 17 02.2 18.7 a 704
1998-09-30 00:56:24 C 04 47 10.88 +19 25 02.7 557
1998-09-30 00:59:45 C 04 47 11.27 +19 25 04.6 557
1998-09-30 02:08:04 C 04 47 18.85 +19 25 43.0 046
1998-09-30 02:09:52 C 04 47 19.06 +19 25 43.9 046
1998-09-30 02:11:42 C 04 47 19.24 +19 25 44.9 046
1998-09-30 02:13:25 C 04 47 19.44 +19 25 45.9 046
1998-09-30 11:30:21 C 04 48 22.64 +19 30 55.4 658
1998-09-30 11:38:32 C 04 48 23.56 +19 31 00.0 658
1998-09-30 11:55:28 C 04 48 25.41 +19 31 09.5 658
1998-09-30 15:23:47 C 04 48 49.67 +19 33 20.4 422
1998-09-30 15:25:11 C 04 48 49.87 +19 33 21.1 422
1998-09-30 15:29:44 C 04 48 50.35 +19 33 23.4 422
1998-10-01 17:55:39 C 04 51 53.90 +19 48 26.3 422
1998-10-01 17:57:13 C 04 51 54.12 +19 48 27.4 422
1998-10-01 17:58:13 C 04 51 54.24 +19 48 27.9 422
1998-10-02 10:19:27 C 04 53 50.66 +19 57 45.1 18.1 a 704
1998-10-02 10:41:12 C 04 53 53.22 +19 57 58.4 18.4 a 704
1998-10-02 11:02:58 C 04 53 55.77 +19 58 11.3 18.1 a 704
1998-10-02 11:24:36 C 04 53 58.31 +19 58 24.1 18.1 a 704
1998-10-02 11:46:29 C 04 54 00.82 +19 58 36.7 18.6 a 704
1998-10-02 15:22:39 C 04 54 27.44 +20 00 42.1 z 411
1998-10-02 15:25:08 C 04 54 27.75 +20 00 44.2 z 411
1998-10-02 15:42:20 C 04 54 29.75 +20 00 54.1 z 411
1998-10-02 17:22:28 C 04 54 41.34 +20 02 08.8 422
1998-10-02 17:23:27 C 04 54 41.54 +20 02 08.6 422
1998-10-02 17:24:23 C 04 54 41.65 +20 02 09.1 422
1998-10-02 18:51:00 C 04 54 52.07 +20 02 47.3 360
1998-10-02 18:54:44 C 04 54 52.50 +20 02 49.9 360
1998-10-02 18:57:44 C 04 54 52.85 +20 02 51.7 360
1998-10-13 23:04:06 C 05 33 15.23 +23 08 13.5 557
1998-10-13 23:06:26 C 05 33 15.61 +23 08 15.1 557
1998-10-13 23:08:47 C 05 33 16.02 +23 08 17.0 557
1998-10-17 01:42:52 C 05 46 55.18 +24 11 03.5 046
1998-10-17 01:44:21 C 05 46 55.46 +24 11 04.8 046
1998-10-17 01:46:16 C 05 46 55.81 +24 11 06.3 046
1998-10-17 01:47:21 C 05 46 56.04 +24 11 07.5 046
1998-10-18 12:49:43 C 05 53 59.26 +24 42 26.6 658
1998-10-18 12:54:06 C 05 54 00.15 +24 42 30.4 658
1998-10-18 12:58:52 C 05 54 01.14 +24 42 34.7 658
1998-10-19 11:48:08 C 05 58 52.50 +25 03 36.1 658
1998-10-19 11:51:13 C 05 58 53.17 +25 03 39.1 658
1998-10-19 11:54:59 C 05 58 53.95 +25 03 42.6 658
1998-10-21 02:16:04 C 06 07 33.25 +25 40 04.6 118
1998-10-21 02:30:07 C 06 07 36.50 +25 40 17.9 118
1998-10-21 04:54:27 C 06 08 10.87 +25 42 57.3 z 860
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)