4257 Ubasti (1987 QA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4683594313 ± 4.35e-09
Semi-major axis (a)1.6471372987 AU ± 3.96e-10
Inclination (i)40.72180734° ± 5.74e-07
Long. of Asc. Node (Ω)169.14106442° ± 8.38e-07
Arg. of Perihelion (ω)278.95769231° ± 8.58e-07
Mean Anomaly (M)347.42839566° ± 6.71e-07
Mean Motion (n)0.4662486353°/day ± 1.68e-10
Perihelion dist (q)0.87568501 AU ± 7.17e-09
Aphelion dist (Q)2.41858959 AU ± 7.19e-09
Orbital Period2.11394996 yr ± 7.62e-10
Physical Parameters
H (abs. magnitude)15.96
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.081″
Uncertainty0
Orbit TypeApollo
MOID0.169642 AU
Observations Used2750
Gaia Obs Used109
Oppositions15
Arc Total1987-2026
First Observation Used1987-08-23
Last Observation Used2026-04-08
Observations (2997)
Date Type RA Dec Mag Band Observatory
2025-12-23 00:28:33 C 14 09 30.631 -78 56 17.95 V M22
2025-12-23 00:56:49 C 14 09 27.211 -78 55 48.50 V M22
2025-12-23 01:42:51 C 14 09 21.391 -78 55 00.41 V M22
2025-12-23 01:47:38 C 14 09 20.762 -78 54 55.80 V M22
2025-12-23 01:57:20 C 14 09 19.529 -78 54 45.32 V M22
2025-12-23 02:12:16 C 14 09 17.597 -78 54 29.81 V M22
2025-12-24 07:57:36 C 14 05 58.219 -78 21 33.08 V W68
2025-12-24 08:03:07 C 14 05 57.665 -78 21 27.18 V W68
2025-12-24 08:13:01 C 14 05 56.594 -78 21 16.34 V W68
2025-12-24 08:23:34 C 14 05 55.471 -78 21 05.18 V W68
2025-12-24 08:35:13 C 14 05 54.106 -78 20 52.51 V W68
2025-12-25 07:33:34 C 14 03 42.538 -77 54 48.35 V W68
2025-12-25 07:37:49 C 14 03 42.060 -77 54 43.70 V W68
2025-12-25 07:46:41 C 14 03 41.268 -77 54 33.95 V W68
2025-12-25 08:00:56 C 14 03 39.941 -77 54 18.43 V W68
2025-12-25 08:39:54 C 14 03 36.238 -77 53 35.38 V W68
2025-12-27 07:38:21 C 13 59 59.261 -76 58 47.24 V W68
2025-12-27 07:42:32 C 13 59 58.846 -76 58 41.88 V W68
2025-12-27 07:51:26 C 13 59 58.265 -76 58 32.23 V W68
2025-12-27 08:05:46 C 13 59 57.209 -76 58 15.74 V W68
2025-12-27 08:40:05 C 13 59 54.727 -76 57 36.43 V W68
2025-12-30 07:39:28 C 13 56 16.080 -75 30 59.44 V W68
2025-12-30 07:43:38 C 13 56 15.833 -75 30 54.58 V W68
2025-12-30 07:51:57 C 13 56 15.451 -75 30 44.46 V W68
2025-12-30 08:07:01 C 13 56 14.798 -75 30 26.46 V W68
2025-12-30 08:44:07 C 13 56 13.082 -75 29 41.75 V W68
2025-12-31 07:41:42 C 13 55 26.018 -75 00 40.28 V W68
2025-12-31 07:46:09 C 13 55 25.860 -75 00 35.03 V W68
2025-12-31 07:53:58 C 13 55 25.546 -75 00 25.27 V W68
2025-12-31 08:17:13 C 13 55 24.619 -74 59 56.90 V W68
2026-01-02 07:53:58 C 13 54 15.934 -73 58 18.73 V W68
2026-01-02 07:57:59 C 13 54 15.835 -73 58 13.84 V W68
2026-01-02 08:08:33 C 13 54 15.542 -73 58 00.48 V W68
2026-01-02 08:26:34 C 13 54 15.127 -73 57 37.22 V W68
2026-01-02 08:47:31 C 13 54 14.558 -73 57 10.87 V W68
2026-01-03 07:42:46 C 13 53 54.583 -73 26 43.04 V W68
2026-01-03 07:47:04 C 13 53 54.466 -73 26 37.32 V W68
2026-01-03 07:53:57 C 13 53 54.386 -73 26 28.61 V W68
2026-01-03 08:08:44 C 13 53 54.144 -73 26 09.67 V W68
2026-01-05 07:40:57 C 13 53 33.835 -72 21 28.94 V W68
2026-01-05 07:45:12 C 13 53 33.782 -72 21 23.15 V W68
2026-01-05 08:07:17 C 13 53 33.490 -72 20 53.81 V W68
2026-01-05 08:35:43 C 13 53 33.230 -72 20 15.43 V W68
2026-01-05 08:40:23 C 13 53 33.204 -72 20 09.31 V W68
2026-01-05 08:44:24 C 13 53 33.187 -72 20 03.91 V W68
2026-01-05 08:49:17 C 13 53 33.156 -72 19 57.29 V W68
2026-01-05 08:51:20 C 13 53 33.026 -72 19 54.41 V W68
2026-01-06 07:53:12 C 13 53 33.010 -71 47 43.98 V W68
2026-01-06 07:57:16 C 13 53 33.067 -71 47 38.47 V W68
2026-01-06 08:04:18 C 13 53 32.983 -71 47 29.18 V W68