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
2023-09-27 09:19:59 C 07 30 17.844 -28 51 35.75 V W68
2023-09-27 09:23:57 C 07 30 18.898 -28 51 41.54 V W68
2023-09-30 08:49:42 C 07 49 10.771 -30 27 12.67 V W68
2023-09-30 08:57:41 C 07 49 12.809 -30 27 22.61 V W68
2023-09-30 09:03:40 C 07 49 14.323 -30 27 30.28 V W68
2023-09-30 09:18:45 C 07 49 18.223 -30 27 49.18 V W68
2023-10-02 02:55:53 C 08 00 01.776 -31 16 11.71 V M22
2023-10-02 03:00:00 C 08 00 02.854 -31 16 16.00 V M22
2023-10-02 03:04:05 C 08 00 03.866 -31 16 20.93 V M22
2023-10-02 03:04:43 C 08 00 04.054 -31 16 21.61 V M22
2023-10-02 03:06:41 C 08 00 04.524 -31 16 24.02 V M22
2023-10-02 03:10:41 C 08 00 05.556 -31 16 28.24 V M22
2023-10-09 08:42:34 C 08 42 28.901 -33 46 17.65 V W68
2023-10-09 08:48:29 C 08 42 30.283 -33 46 21.68 V W68
2023-10-09 08:59:07 C 08 42 32.738 -33 46 28.60 V W68
2023-10-09 09:06:23 C 08 42 34.414 -33 46 33.53 V W68
2023-10-12 08:38:34 C 08 58 54.461 -34 26 50.53 V W68
2023-10-12 08:43:58 C 08 58 55.673 -34 26 53.30 V W68
2023-10-12 08:48:40 C 08 58 56.690 -34 26 55.68 V W68
2023-10-12 08:57:25 C 08 58 58.634 -34 27 00.22 V W68
2023-10-12 09:09:22 C 08 59 01.274 -34 27 06.12 V W68
2023-10-20 02:19:32 C 09 38 19.728 -35 24 51.52 V M22
2023-10-20 02:25:35 C 09 38 20.921 -35 24 52.78 V M22
2023-10-20 02:39:10 C 09 38 23.654 -35 24 54.76 V M22
2023-10-26 01:49:28 C 10 06 10.505 -35 32 53.77 V M22
2023-10-26 01:54:54 C 10 06 11.520 -35 32 53.88 V M22
2023-10-26 02:17:13 C 10 06 15.658 -35 32 53.05 V M22
2023-10-27 08:18:53 C 10 11 50.244 -35 31 16.75 V W68
2023-10-27 08:24:55 C 10 11 51.331 -35 31 16.43 V W68
2023-10-27 08:34:16 C 10 11 53.030 -35 31 16.90 V W68
2023-11-08 08:11:10 C 11 01 44.462 -34 31 58.66 V W68
2023-11-08 08:25:19 C 11 01 46.778 -34 31 54.37 V W68
2023-11-08 08:38:18 C 11 01 48.883 -34 31 50.74 V W68
2023-11-17 07:58:24 C 11 35 48.648 -33 08 22.52 V W68
2023-11-17 08:12:30 C 11 35 50.803 -33 08 16.69 V W68
2023-11-17 08:19:11 C 11 35 51.794 -33 08 13.70 V W68
2023-11-25 01:42:27 C 12 03 23.582 -31 36 52.70 V M22
2023-11-25 02:05:01 C 12 03 26.820 -31 36 40.57 V M22
2023-11-25 02:11:05 C 12 03 27.682 -31 36 37.58 V M22
2023-12-16 07:46:43 C 13 12 29.563 -26 13 11.21 V W68
2023-12-16 07:52:41 C 13 12 30.324 -26 13 06.78 V W68
2023-12-16 08:11:29 C 13 12 32.681 -26 12 53.50 V W68
2023-12-16 08:27:30 C 13 12 34.702 -26 12 41.83 V W68
2023-12-17 01:46:52 C 13 14 45.715 -25 59 53.20 V M22
2023-12-17 01:54:54 C 13 14 46.692 -25 59 47.51 V M22
2023-12-17 02:03:36 C 13 14 47.753 -25 59 41.21 V M22
2023-12-17 02:14:25 C 13 14 49.130 -25 59 33.14 V M22
2023-12-18 01:50:27 C 13 17 46.555 -25 41 55.25 V M22
2023-12-18 02:02:55 C 13 17 48.130 -25 41 45.89 V M22
2023-12-18 02:13:31 C 13 17 49.426 -25 41 38.11 V M22