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
2025-07-01 13:16:04 C 23 12 46.426 +24 17 16.55 V T05
2025-07-01 13:29:40 C 23 12 46.889 +24 17 20.36 V T05
2025-07-01 13:33:42 C 23 12 47.069 +24 17 21.05 V T05
2025-07-02 13:45:10 C 23 13 45.276 +24 22 20.64 V T05
2025-07-02 13:50:34 C 23 13 45.442 +24 22 21.97 V T05
2025-07-02 14:00:35 C 23 13 45.845 +24 22 23.59 V T05
2025-07-02 14:08:50 C 23 13 46.133 +24 22 25.79 V T05
2025-07-02 14:43:32 C 23 13 47.431 +24 22 33.53 V T05
2025-07-05 12:59:20 C 23 16 32.025 +24 35 47.62 X F52
2025-07-05 13:13:56 C 23 16 32.556 +24 35 50.22 X F52
2025-07-05 13:28:35 C 23 16 33.087 +24 35 52.83 X F52
2025-07-05 13:43:11 C 23 16 33.616 +24 35 55.47 X F52
2025-07-06 12:58:35 C 23 17 26.530 +24 39 51.95 V T05
2025-07-06 13:00:33 C 23 17 26.566 +24 39 51.77 V T05
2025-07-06 13:01:12 C 23 17 26.626 +24 39 52.78 V T05
2025-07-06 13:05:06 C 23 17 26.722 +24 39 52.63 V T05
2025-07-06 13:06:24 C 23 17 26.748 +24 39 53.24 V T05
2025-07-06 13:14:18 C 23 17 27.101 +24 39 54.54 V T05
2025-07-06 13:16:55 C 23 17 27.197 +24 39 55.12 V T05
2025-07-07 04:21:56 C 23 18 00.948 +24 42 20.27 V R17
2025-07-07 04:40:07 C 23 18 01.613 +24 42 23.80 V R17
2025-07-07 04:51:34 C 23 18 01.985 +24 42 25.16 V R17
2025-07-07 04:57:46 C 23 18 02.191 +24 42 26.57 V R17
2025-07-08 11:21:58 C 23 19 09.586 +24 47 01.69 X F52
2025-07-08 11:37:48 C 23 19 10.152 +24 47 04.41 X F52
2025-07-08 11:53:41 C 23 19 10.699 +24 47 06.74 X F52
2025-07-08 12:09:28 C 23 19 11.243 +24 47 09.12 X F52
2025-07-08 12:54:04 C 23 19 12.816 +24 47 16.06 X F51
2025-07-08 13:26:15 C 23 19 13.910 +24 47 20.70 X F51
2025-07-08 13:42:31 C 23 19 14.470 +24 47 22.94 X F51
2025-07-09 12:32:37 C 23 20 03.951 +24 50 31.63 X F51
2025-07-09 12:38:59 C 23 20 04.123 +24 50 32.50 V T05
2025-07-09 12:48:41 C 23 20 04.502 +24 50 33.93 X F51
2025-07-09 12:49:51 C 23 20 04.613 +24 50 35.20 V T05
2025-07-09 12:57:09 C 23 20 04.771 +24 50 35.88 V T05
2025-07-09 13:04:46 C 23 20 05.045 +24 50 36.12 X F51
2025-07-09 13:08:46 C 23 20 05.160 +24 50 36.78 V T05
2025-07-09 13:20:52 C 23 20 05.585 +24 50 38.28 X F51
2025-07-13 12:24:19 C 23 23 21.899 +25 00 55.21 X F52
2025-07-13 12:41:53 C 23 23 22.444 +25 00 56.74 X F52
2025-07-13 12:59:34 C 23 23 22.991 +25 00 58.26 X F52
2025-07-13 13:17:23 C 23 23 23.545 +25 00 59.85 X F52
2025-07-15 13:22:49 C 23 24 56.732 +25 04 17.58 X F52
2025-07-15 13:31:15 C 23 24 56.980 +25 04 18.11 X F52
2025-07-15 13:39:48 C 23 24 57.230 +25 04 18.51 X F52
2025-07-15 13:48:36 C 23 24 57.491 +25 04 19.05 X F52
2025-07-19 04:40:39 C 23 27 34.584 +25 06 32.87 V R17
2025-07-19 04:55:24 C 23 27 34.968 +25 06 32.87 V R17
2025-07-19 05:04:26 C 23 27 35.206 +25 06 32.00 V R17
2025-07-19 05:16:20 C 23 27 35.508 +25 06 33.08 V R17