297300 (1998 SC15)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4144877459 ± 1.07e-08
Semi-major axis (a)1.2729533676 AU ± 6.34e-10
Inclination (i)16.08208693° ± 3.54e-06
Long. of Asc. Node (Ω)198.66904007° ± 3.76e-06
Arg. of Perihelion (ω)277.50880644° ± 3.99e-06
Mean Anomaly (M)252.07551693° ± 2.85e-06
Mean Motion (n)0.6862676619°/day ± 5.13e-10
Perihelion dist (q)0.74532980 AU ± 1.36e-08
Aphelion dist (Q)1.80057694 AU ± 1.36e-08
Orbital Period1.43621263 yr ± 1.07e-09
Physical Parameters
H (abs. magnitude)19.29
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.332″
Uncertainty0
Orbit TypeApollo
MOID0.000908 AU
Observations Used530
Radar Obs Used2
Oppositions4
Arc Total1998-2024
First Observation Used1998-09-23
Last Observation Used2024-08-17
Observations (594)
Date Type RA Dec Mag Band Observatory
1998-09-23 03:11:37 C 22 26 49.10 +15 55 27.8 19.1 a 704
1998-09-23 03:45:16 C 22 26 45.60 +15 54 32.9 20.0 a 704
1998-09-23 04:18:54 C 22 26 41.91 +15 53 36.6 20.1 a 704
1998-09-23 04:53:53 C 22 26 38.29 +15 52 40.6 19.7 a 704
1998-09-23 05:27:35 C 22 26 34.67 +15 51 44.1 19.9 a 704
1998-09-23 19:35:11 C 22 25 10.63 +15 28 09.8 046
1998-09-23 19:37:01 C 22 25 10.37 +15 28 06.5 046
1998-09-23 19:38:49 C 22 25 10.13 +15 28 04.2 046
1998-09-23 19:40:52 C 22 25 09.97 +15 28 01.4 046
1998-09-23 19:46:30 C 22 25 09.52 +15 27 51.4 b 611
1998-09-23 19:51:29 C 22 25 08.99 +15 27 42.7 b 611
1998-09-23 19:59:00 C 22 25 08.23 +15 27 30.8 b 611
1998-09-23 21:55:16 C 22 24 56.18 +15 24 16.3 z 587
1998-09-23 22:01:51 C 22 24 55.35 +15 24 05.1 z 587
1998-09-23 23:42:25 C 22 24 44.80 +15 21 13.2 557
1998-09-23 23:45:25 C 22 24 44.49 +15 21 08.5 557
1998-09-24 03:47:58 C 22 24 21.52 +15 14 23.4 19.2 a 704
1998-09-24 04:20:13 C 22 24 18.14 +15 13 30.5 20.2 a 704
1998-09-24 04:52:39 C 22 24 14.61 +15 12 36.0 19.5 a 704
1998-09-24 05:57:09 C 22 24 07.94 +15 10 44.0 19.4 a 704
1998-09-24 07:38:40 C 22 23 57.60 +15 07 46.3 658
1998-09-24 07:42:42 C 22 23 57.13 +15 07 39.2 658
1998-09-24 07:57:24 C 22 23 55.57 +15 07 13.3 658
1998-09-24 12:42:19 C 22 23 27.79 +14 59 35.4 b 426
1998-09-24 12:51:45 C 22 23 26.83 +14 59 18.7 b 426
1998-09-24 13:01:12 C 22 23 25.82 +14 59 02.1 b 426
1998-09-24 21:53:14 C 22 22 32.64 +14 43 10.1 046
1998-09-24 21:55:03 C 22 22 32.39 +14 43 07.1 046
1998-09-24 21:56:59 C 22 22 32.19 +14 43 03.6 046
1998-09-25 00:59:18 C 22 22 13.40 +14 37 43.1 557
1998-09-25 01:01:30 C 22 22 13.15 +14 37 39.9 557
1998-09-25 01:03:40 C 22 22 12.88 +14 37 34.7 557
1998-09-25 11:41:21 C 22 21 10.62 +14 19 23.0 422
1998-09-25 23:14:53 C 22 20 01.04 +13 58 09.0 046
1998-09-25 23:16:41 C 22 20 00.87 +13 58 05.7 046
1998-09-25 23:18:16 C 22 20 00.70 +13 58 02.6 046
1998-09-25 23:19:51 C 22 20 00.54 +13 58 00.3 046
1998-09-27 20:58:29 C 22 15 31.54 +12 33 08.2 557
1998-09-27 21:38:33 C 22 15 27.42 +12 31 51.9 557
1998-09-27 21:43:17 C 22 15 26.94 +12 31 42.6 557
1998-09-29 05:18:24 C 22 12 23.49 +11 30 13.0 658
1998-09-29 05:22:49 C 22 12 23.04 +11 30 04.3 658
1998-09-29 05:25:29 C 22 12 22.79 +11 29 59.0 658
1998-09-29 19:21:19 C 22 11 02.75 +11 02 10.3 046
1998-09-29 19:22:49 C 22 11 02.57 +11 02 06.8 046
1998-09-29 19:24:25 C 22 11 02.36 +11 02 04.0 046
1998-09-29 19:26:51 C 22 11 02.06 +11 01 59.7 046
1998-09-29 19:29:28 C 22 11 01.85 +11 01 53.8 046
1998-09-30 05:14:28 C 22 10 05.90 +10 42 11.9 658
1998-09-30 05:19:21 C 22 10 05.36 +10 42 01.9 658
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2011-10-12 07:30:00 122033.7481 0.3 Hz 2380 -1 -1
2011-10-12 08:24:00 135746785.83 0.5 us 2380 -1 -1
2011-10-12 08:24:00 119882.9307 0.1 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)