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
2024-02-11 08:33:42 C 15 26 21.262 -00 56 12.12 V W68
2024-02-12 13:16:18 C 15 28 07.051 -00 11 07.12 V T05
2024-02-12 13:44:34 C 15 28 08.746 -00 10 22.19 V T05
2024-02-12 13:50:05 C 15 28 09.067 -00 10 13.37 V T05
2024-02-12 14:01:32 C 15 28 09.730 -00 09 55.44 V T05
2024-02-17 01:36:31 C 15 34 15.504 +02 44 36.20 V M22
2024-02-17 01:41:09 C 15 34 15.737 +02 44 43.87 V M22
2024-02-17 02:08:36 C 15 34 17.134 +02 45 29.59 V M22
2024-02-17 02:33:16 C 15 34 18.401 +02 46 10.56 V M22
2024-02-17 12:39:32 C 15 34 50.005 +03 02 45.96 V 703
2024-02-17 12:42:47 C 15 34 50.156 +03 02 51.32 V 703
2024-02-17 12:46:03 C 15 34 50.351 +03 02 57.34 V 703
2024-02-17 12:49:18 C 15 34 50.516 +03 03 01.80 V 703
2024-02-18 14:47:23 C 15 36 10.377 +03 46 25.64 X F51
2024-02-18 15:03:22 C 15 36 11.139 +03 46 52.45 X F51
2024-02-18 15:19:24 C 15 36 11.907 +03 47 19.38 X F51
2024-02-18 15:35:30 C 15 36 12.671 +03 47 46.40 X F51
2024-02-19 11:46:37 C 15 37 12.608 +04 21 44.06 V 703
2024-02-19 11:49:53 C 15 37 12.760 +04 21 48.85 V 703
2024-02-19 11:53:08 C 15 37 12.918 +04 21 54.65 V 703
2024-02-19 11:56:24 C 15 37 13.123 +04 21 59.54 V 703
2024-02-20 12:10:26 C 15 38 22.564 +05 03 06.37 V 703
2024-02-20 12:13:42 C 15 38 22.664 +05 03 11.99 V 703
2024-02-20 12:16:59 C 15 38 22.830 +05 03 17.78 V 703
2024-02-20 12:20:15 C 15 38 22.996 +05 03 24.01 V 703
2024-02-20 14:23:10 C 15 38 28.889 +05 06 54.86 V T05
2024-02-20 14:25:46 C 15 38 29.009 +05 06 59.26 V T05
2024-02-20 14:35:19 C 15 38 29.436 +05 07 15.49 V T05
2024-02-21 01:53:23 C 15 39 00.874 +05 26 41.39 V M22
2024-02-21 01:58:36 C 15 39 01.135 +05 26 49.99 V M22
2024-02-21 02:06:29 C 15 39 01.510 +05 27 03.49 V M22
2024-02-21 02:25:22 C 15 39 02.294 +05 27 35.96 V M22
2024-02-23 07:23:40 C 15 41 21.737 +06 58 55.85 V W68
2024-02-23 07:28:13 C 15 41 21.934 +06 59 03.59 V W68
2024-02-23 07:36:42 C 15 41 22.248 +06 59 18.46 V W68
2024-02-23 07:48:29 C 15 41 22.714 +06 59 38.00 V W68
2024-02-24 13:24:07 C 15 42 34.848 +07 51 07.99 V T05
2024-02-24 13:26:43 C 15 42 34.975 +07 51 12.42 V T05
2024-02-24 13:31:16 C 15 42 35.129 +07 51 20.45 V T05
2024-02-24 13:47:11 C 15 42 35.714 +07 51 48.17 V T05
2024-02-25 10:48:39 C 15 43 24.439 +08 28 39.22 V U52
2024-02-25 10:58:02 C 15 43 24.761 +08 28 55.78 V U52
2024-02-26 13:18:42 C 15 44 22.834 +09 15 29.81 V T05
2024-02-26 13:23:15 C 15 44 23.004 +09 15 37.30 V T05
2024-02-26 13:31:04 C 15 44 23.270 +09 15 51.70 V T05
2024-02-26 13:52:45 C 15 44 23.962 +09 16 30.22 V T05
2024-02-27 06:53:50 C 15 44 59.760 +09 46 49.48 V W68
2024-02-27 07:04:21 C 15 45 00.065 +09 47 08.09 V W68
2024-02-27 07:08:55 C 15 45 00.192 +09 47 16.76 V W68
2024-02-27 07:23:18 C 15 45 00.670 +09 47 41.64 V W68