1998 QH1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5558281146 ± 1.32e-07
Semi-major axis (a)2.5344927687 AU ± 5.34e-08
Inclination (i)12.29947855° ± 1.97e-05
Long. of Asc. Node (Ω)161.61903550° ± 2.33e-05
Arg. of Perihelion (ω)216.54938186° ± 9.42e-05
Mean Anomaly (M)251.80103336° ± 7.65e-05
Mean Motion (n)0.2442731267°/day ± 7.73e-09
Perihelion dist (q)1.12575043 AU ± 3.34e-07
Aphelion dist (Q)3.94323511 AU ± 3.44e-07
Orbital Period4.03493539 yr ± 1.28e-07
Physical Parameters
H (abs. magnitude)20.70
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.483″
Uncertainty0
Orbit TypeAmor
MOID0.158190 AU
Observations Used45
Oppositions3
Arc Total1998-2002
First Observation Used1998-08-17
Last Observation Used2002-09-14
Observations (49)
Date Type RA Dec Mag Band Observatory
1998-08-17 08:43:42 C 23 28 23.05 +07 13 40.2 19.8 a 704
1998-08-17 09:44:31 C 23 28 30.30 +07 13 05.1 20.0 a 704
1998-08-17 10:14:44 C 23 28 34.07 +07 12 46.5 19.4 a 704
1998-08-17 10:44:48 C 23 28 37.30 +07 12 30.8 19.6 a 704
1998-08-19 12:46:36 C 23 35 12.54 +06 39 49.1 422
1998-08-19 22:43:27 C 23 36 32.79 +06 31 54.6 557
1998-08-19 22:46:50 C 23 36 33.23 +06 31 51.1 557
1998-08-19 22:50:11 C 23 36 33.69 +06 31 49.1 557
1998-08-20 00:14:10 C 23 36 44.65 +06 30 47.1 557
1998-08-21 02:03:36 C 23 40 18.16 +06 10 40.7 557
1998-08-21 02:08:58 C 23 40 18.90 +06 10 36.4 557
1998-08-21 02:11:40 C 23 40 19.22 +06 10 33.3 557
1998-08-24 08:56:10 C 23 51 52.06 +04 58 55.0 658
1998-08-24 08:58:04 C 23 51 52.35 +04 58 53.0 658
1998-08-24 09:00:45 C 23 51 52.76 +04 58 50.5 658
1998-08-26 00:53:29 C 23 58 06.59 +04 16 16.9 557
1998-08-26 00:56:32 C 23 58 07.09 +04 16 12.7 557
1998-08-26 23:23:02 C 00 01 45.82 +03 50 21.2 z 587
1998-08-26 23:27:15 C 00 01 46.48 +03 50 17.1 z 587
1998-09-01 01:21:40 C 00 23 05.88 +01 04 33.0 046
1998-09-01 01:23:24 C 00 23 06.17 +01 04 31.3 046
1998-09-01 01:25:46 C 00 23 06.61 +01 04 27.0 046
1998-09-01 01:27:40 C 00 23 06.96 +01 04 24.7 046
1998-09-02 16:24:23 C 00 30 31.28 +00 02 36.7 z 402
1998-09-02 16:26:24 C 00 30 31.66 +00 02 32.9 z 402
1998-09-02 16:28:24 C 00 30 32.04 +00 02 29.8 z 402
1998-09-02 16:55:14 C 00 30 37.09 +00 01 47.0 360
1998-09-02 16:59:00 C 00 30 37.81 +00 01 40.6 360
1998-09-02 17:01:59 C 00 30 38.36 +00 01 35.2 360
1998-09-18 13:56:02 C 01 54 55.42 -12 48 15.8 422
1998-09-18 13:57:35 C 01 54 55.67 -12 48 19.0 422
1998-09-18 16:30:46 C 01 55 30.98 -12 53 51.9 b 426
1998-09-18 16:35:49 C 01 55 32.13 -12 54 02.8 b 426
1998-09-18 16:41:03 C 01 55 33.27 -12 54 14.0 b 426
1998-09-19 16:04:35 C 02 01 05.44 -13 45 20.8 z 402
1998-09-19 16:06:36 C 02 01 05.88 -13 45 25.3 z 402
1998-09-19 16:08:36 C 02 01 06.36 -13 45 30.4 z 402
1998-09-25 01:32:32 C 02 31 10.20 -18 08 35.8 046
1998-09-25 01:34:00 C 02 31 10.58 -18 08 39.2 046
1998-09-25 01:35:38 C 02 31 10.92 -18 08 42.1 046
1998-09-25 01:36:54 C 02 31 11.18 -18 08 44.1 046
1998-10-25 15:08:35 C 04 22 12.54 -29 08 32.8 b 426
1998-10-25 15:17:13 C 04 22 13.07 -29 08 34.4 b 426
2002-09-13 04:30:42 C 19 45 50.28 -16 30 41.2 d 291
2002-09-13 05:01:55 C 19 45 51.36 -16 31 24.1 d 291
2002-09-13 05:33:44 C 19 45 52.39 -16 32 09.3 d 291
2002-09-14 03:57:42 C 19 46 49.82 -17 03 11.0 d 291
2002-09-14 04:08:53 C 19 46 50.21 -17 03 26.2 d 291
2002-09-14 04:20:35 C 19 46 50.66 -17 03 43.1 d 291