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
2024-03-20 10:43:49 C 15 50 31.787 +25 38 42.07 V 703
2024-03-20 10:47:07 C 15 50 31.715 +25 38 48.01 V 703
2024-03-20 10:50:25 C 15 50 31.668 +25 38 53.52 V 703
2024-03-21 09:20:15 C 15 50 10.208 +26 17 05.17 V 703
2024-03-21 09:23:36 C 15 50 10.158 +26 17 10.39 V 703
2024-03-21 09:26:56 C 15 50 10.158 +26 17 15.54 V 703
2024-03-21 09:30:15 C 15 50 10.057 +26 17 21.30 V 703
2024-03-21 11:36:06 C 15 50 07.994 +26 20 55.57 V T05
2024-03-21 11:38:44 C 15 50 07.951 +26 21 00.22 V T05
2024-03-21 11:42:41 C 15 50 07.867 +26 21 06.41 V T05
2024-03-21 11:50:36 C 15 50 07.682 +26 21 20.09 V T05
2024-03-22 09:39:14 C 15 49 43.740 +26 57 55.37 V T08
2024-03-22 09:43:13 C 15 49 43.630 +26 58 02.82 V T08
2024-03-22 10:14:17 C 15 49 42.982 +26 58 54.48 V T08
2024-03-22 10:41:48 C 15 49 42.427 +26 59 41.68 V T08
2024-03-23 11:30:19 C 15 49 11.275 +27 40 51.53 V T08
2024-03-23 12:04:21 C 15 49 10.375 +27 41 48.66 V T08
2024-03-23 12:07:54 C 15 49 10.286 +27 41 53.84 V T08
2024-03-23 12:11:54 C 15 49 10.229 +27 42 00.79 V T08
2024-03-27 12:57:44 C 15 46 33.979 +30 17 08.92 V T08
2024-03-27 13:01:18 C 15 46 33.850 +30 17 14.17 V T08
2024-03-27 13:05:39 C 15 46 33.677 +30 17 20.51 V T08
2024-03-27 13:41:19 C 15 46 32.417 +30 18 15.77 V T08
2024-03-28 11:14:46 C 15 45 50.184 +30 51 28.51 V 703
2024-03-28 11:18:11 C 15 45 50.000 +30 51 33.98 V 703
2024-03-28 11:21:39 C 15 45 49.849 +30 51 40.61 V 703
2024-03-28 11:25:02 C 15 45 49.734 +30 51 45.00 V 703
2024-03-28 12:38:09 C 15 45 47.606 +30 53 38.22 V T05
2024-03-28 12:40:45 C 15 45 47.508 +30 53 42.94 V T05
2024-03-28 12:45:19 C 15 45 47.335 +30 53 49.52 V T05
2024-03-28 12:52:38 C 15 45 47.042 +30 54 00.18 V T05
2024-03-29 12:08:13 C 15 44 58.406 +31 29 15.83 V T05
2024-03-29 12:11:28 C 15 44 58.255 +31 29 20.40 V T05
2024-03-29 12:36:38 C 15 44 57.310 +31 29 58.74 V T05
2024-03-29 12:42:53 C 15 44 57.024 +31 30 08.14 V T05
2024-03-30 10:52:14 C 15 44 07.946 +32 03 06.80 V T08
2024-03-30 10:56:14 C 15 44 07.802 +32 03 12.56 V T08
2024-03-30 11:00:23 C 15 44 07.656 +32 03 18.68 V T08
2024-03-30 11:09:40 C 15 44 07.253 +32 03 32.98 V T08
2024-03-31 10:38:42 C 15 43 11.921 +32 37 51.78 V T08
2024-03-31 10:43:21 C 15 43 11.806 +32 37 58.15 V T08
2024-03-31 10:49:26 C 15 43 11.515 +32 38 07.48 V T08
2024-03-31 10:59:25 C 15 43 11.088 +32 38 22.09 V T08
2024-04-01 11:53:24 C 15 42 08.885 +33 14 00.64 V T05
2024-04-01 11:56:00 C 15 42 08.772 +33 14 03.62 V T05
2024-04-01 12:27:46 C 15 42 07.339 +33 14 49.24 V T05
2024-04-01 12:32:31 C 15 42 07.102 +33 14 55.90 V T05
2024-04-02 10:59:18 C 15 41 08.465 +33 46 20.86 V T08
2024-04-02 11:09:17 C 15 41 07.975 +33 46 34.90 V T08
2024-04-02 11:25:56 C 15 41 07.207 +33 46 57.83 V T08