137084 (1998 XS16)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4965944426 ± 2.25e-08
Semi-major axis (a)1.2122391473 AU ± 5.56e-10
Inclination (i)26.55930199° ± 2.65e-06
Long. of Asc. Node (Ω)272.97685443° ± 3.59e-06
Arg. of Perihelion (ω)358.34109094° ± 4.01e-06
Mean Anomaly (M)253.89618035° ± 3.80e-06
Mean Motion (n)0.7384648343°/day ± 5.08e-10
Perihelion dist (q)0.61024792 AU ± 2.73e-08
Aphelion dist (Q)1.81423037 AU ± 2.73e-08
Orbital Period1.33469630 yr ± 9.18e-10
Physical Parameters
H (abs. magnitude)16.47
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.360″
Uncertainty0
Orbit TypeApollo
MOID0.407364 AU
Observations Used2535
Gaia Obs Used55
Oppositions6
Arc Total1994-2016
First Observation Used1994-12-03
Last Observation Used2026-01-13
Observations (3383)
Date Type RA Dec Mag Band Observatory
1998-12-21 15:37:39 C 07 01 33.14 +19 01 01.4 b 426
1998-12-22 07:25:50 C 06 59 48.66 +18 51 43.9 19.0 a 704
1998-12-22 07:58:45 C 06 59 44.88 +18 51 25.8 18.5 a 704
1998-12-22 08:31:37 C 06 59 41.00 +18 51 06.5 19.2 a 704
1998-12-22 09:04:26 C 06 59 37.52 +18 50 48.0 19.5 a 704
1998-12-22 09:37:35 C 06 59 33.37 +18 50 27.8 19.5 a 704
1998-12-27 16:26:35 C 06 45 07.56 +17 34 53.4 z 402
1998-12-27 16:28:36 C 06 45 07.33 +17 34 52.0 z 402
1998-12-27 16:30:34 C 06 45 07.07 +17 34 50.9 z 402
1998-12-28 16:16:00 C 06 42 21.59 +17 20 18.0 360
1998-12-28 16:20:59 C 06 42 20.99 +17 20 14.9 360
1998-12-28 16:26:44 C 06 42 20.31 +17 20 11.3 360
1998-12-30 21:44:43 C 06 36 07.86 +16 47 08.8 046
1998-12-30 21:46:39 C 06 36 07.66 +16 47 08.1 046
1998-12-30 21:48:10 C 06 36 07.44 +16 47 07.0 046
1999-01-04 11:00:32 C 06 23 28.92 +15 39 07.0 422
1999-01-04 11:01:18 C 06 23 28.87 +15 39 07.3 422
1999-01-04 11:02:46 C 06 23 28.65 +15 39 04.6 422
1999-01-05 11:39:00 C 06 20 40.19 +15 23 43.6 422
1999-01-05 11:40:12 C 06 20 40.08 +15 23 43.4 422
1999-01-05 13:00:47 C 06 20 30.97 +15 22 41.3 z 402
1999-01-05 13:02:47 C 06 20 30.73 +15 22 40.2 z 402
1999-01-05 13:04:47 C 06 20 30.46 +15 22 39.0 z 402
1999-01-05 23:16:43 C 06 19 20.88 +15 16 15.5 557
1999-01-05 23:19:45 C 06 19 20.58 +15 16 13.7 557
1999-01-05 23:25:45 C 06 19 19.92 +15 16 09.8 557
1999-01-10 12:47:07 C 06 07 19.75 +14 09 16.0 422
1999-01-10 12:48:10 C 06 07 19.62 +14 09 15.8 422
1999-01-15 11:41:21 C 05 55 18.10 +12 59 46.1 422
1999-01-15 11:48:27 C 05 55 17.41 +12 59 41.9 422
1999-01-17 20:59:45 C 05 49 58.93 +12 27 54.4 118
1999-01-17 21:06:34 C 05 49 58.26 +12 27 50.3 118
1999-01-21 19:23:06 C 05 41 59.97 +11 39 01.1 046
1999-01-21 19:26:05 C 05 41 59.72 +11 38 59.8 046
1999-01-21 19:27:42 C 05 41 59.61 +11 38 59.1 046
1999-01-22 12:02:30 C 05 40 41.71 +11 30 52.5 360
1999-01-22 12:06:29 C 05 40 41.40 +11 30 50.4 360
1999-01-22 12:11:14 C 05 40 41.01 +11 30 48.2 360
1999-01-25 05:24:57 C 05 35 53.18 +11 00 09.1 z 711
1999-01-25 05:39:45 C 05 35 52.12 +11 00 02.4 z 711
1999-02-10 10:58:41 C 05 17 33.53 +08 42 45.7 426
1999-02-10 11:16:22 C 05 17 33.12 +08 42 40.7 426
1999-02-10 11:34:09 C 05 17 32.62 +08 42 36.2 426
1999-02-17 12:11:14 C 05 14 38.97 +08 04 34.5 360
1999-02-17 12:18:14 C 05 14 38.87 +08 04 33.0 360
1999-02-17 12:23:30 C 05 14 38.81 +08 04 32.3 360
1999-02-19 03:33:59 C 05 14 21.60 +07 57 15.8 z 711
1999-02-19 03:52:34 C 05 14 21.43 +07 57 12.4 z 711
1999-02-20 03:52:04 C 05 14 14.91 +07 52 59.7 z 711
1999-02-20 04:10:37 C 05 14 14.79 +07 52 56.2 z 711