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
1998-09-30 05:25:02 C 22 10 04.81 +10 41 50.4 658
1998-10-01 11:02:43 C 22 07 17.46 +09 40 53.7 z 402
1998-10-01 11:04:43 C 22 07 17.24 +09 40 50.2 z 402
1998-10-01 11:08:43 C 22 07 16.90 +09 40 42.6 z 402
1998-10-09 18:01:48 C 21 50 10.00 +02 15 37.6 046
1998-10-09 18:05:04 C 21 50 09.76 +02 15 29.9 046
1998-10-09 18:06:42 C 21 50 09.59 +02 15 26.9 046
1998-10-10 02:53:38 C 21 49 29.14 +01 54 54.3 c 699
1998-10-10 03:22:13 C 21 49 26.77 +01 53 46.3 c 699
1998-10-10 03:50:48 C 21 49 24.39 +01 52 39.2 c 699
1998-10-13 18:50:06 C 21 43 09.15 -01 34 50.4 046
1998-10-13 18:51:52 C 21 43 09.00 -01 34 54.8 046
1998-10-13 18:53:40 C 21 43 08.82 -01 34 59.5 046
1998-10-13 18:56:08 C 21 43 08.66 -01 35 06.1 046
1998-10-13 19:36:50 C 21 43 05.73 -01 36 42.8 557
1998-10-13 19:39:11 C 21 43 05.56 -01 36 49.2 557
1998-10-13 19:41:32 C 21 43 05.41 -01 36 54.3 557
1998-10-21 11:32:29 C 21 32 39.15 -08 58 22.8 360
1998-10-21 11:38:30 C 21 32 38.80 -08 58 38.0 360
1998-10-21 11:44:45 C 21 32 38.52 -08 58 52.4 360
1999-04-26 17:51:49 C 18 32 36.18 +01 01 43.4 426
1999-05-12 17:48:14 C 18 11 44.30 +07 46 19.1 426
1999-05-12 18:33:07 C 18 11 40.87 +07 46 59.7 426
1999-05-15 10:09:07 C 18 06 48.58 +08 43 32.5 i 693
1999-05-15 10:11:54 C 18 06 48.35 +08 43 35.0 i 693
1999-05-15 10:14:42 C 18 06 48.16 +08 43 36.4 i 693
1999-05-15 18:08:54 C 18 06 10.22 +08 50 40.0 426
1999-05-15 18:23:30 C 18 06 08.96 +08 50 51.1 426
1999-05-23 08:33:58 C 17 50 27.73 +11 06 47.1 658
1999-05-23 08:43:22 C 17 50 26.88 +11 06 52.6 658
1999-05-24 08:50:52 C 17 48 14.26 +11 21 47.9 658
1999-05-24 08:55:02 C 17 48 13.70 +11 21 50.9 658
1999-05-24 09:08:14 C 17 48 12.56 +11 21 58.5 658
2005-05-14 10:21:20 C 20 56 50.50 +04 34 43.7 d 291
2005-05-14 10:31:29 C 20 56 50.79 +04 34 50.8 d 291
2005-05-14 10:41:57 C 20 56 51.14 +04 34 57.6 d 291
2005-06-14 08:34:13 C 21 03 11.71 +11 40 08.0 d 291
2005-06-14 08:51:02 C 21 03 11.31 +11 40 16.3 d 291
2006-05-08 03:42:13 C 07 52 47.76 +18 27 36.3 d 291
2006-05-08 03:48:07 C 07 52 49.59 +18 27 39.0 d 291
2006-05-08 03:54:01 C 07 52 51.26 +18 27 41.0 d 291
2008-07-05 07:46:10 C 22 30 04.17 +17 12 27.2 22.1 o H55
2008-07-05 08:02:56 C 22 30 04.21 +17 12 36.0 22.2 o H55
2008-07-05 08:20:06 C 22 30 04.25 +17 12 43.1 22.1 o H55
2008-08-18 06:49:13 C 21 48 29.33 +19 35 48.2 o H55
2008-08-18 07:02:46 C 21 48 28.21 +19 35 41.8 o H55
2008-08-18 07:16:28 C 21 48 27.09 +19 35 36.2 o H55
2008-09-19 04:07:26 C 20 50 07.06 +07 51 12.8 o H55
2008-09-19 04:17:31 C 20 50 06.54 +07 51 01.7 o H55
2008-09-19 04:28:36 C 20 50 05.97 +07 50 48.9 o H55
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)