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
2007-03-14 03:32:22 C 14 24 17.42 +20 50 48.5 c A24
2007-03-14 03:45:01 C 14 24 16.66 +20 51 28.4 c A24
2007-03-14 03:56:57 C 14 24 15.98 +20 52 05.9 c A24
2007-03-14 04:08:34 C 14 24 15.28 +20 52 42.4 c A24
2007-03-14 04:09:59 C 14 24 15.21 +20 52 46.8 c A24
2007-03-15 01:32:07 C 14 23 04.02 +21 59 18.2 c A24
2007-03-15 01:49:46 C 14 23 02.94 +22 00 12.5 c A24
2007-03-15 02:07:34 C 14 23 01.86 +22 01 07.1 c A24
2007-03-15 02:28:26 C 14 23 00.57 +22 02 10.8 c A24
2007-03-15 02:29:52 C 14 23 00.50 +22 02 15.5 c A24
2007-03-15 02:39:31 C 14 22 59.90 +22 02 45.1 c A24
2007-03-15 02:50:36 C 14 22 59.23 +22 03 19.0 c A24
2007-03-15 03:00:15 C 14 22 58.64 +22 03 48.6 c A24
2007-03-15 03:01:41 C 14 22 58.56 +22 03 53.0 c A24
2007-03-15 03:11:13 C 14 22 57.97 +22 04 22.3 c A24
2007-03-15 03:22:12 C 14 22 57.30 +22 04 56.0 c A24
2007-03-15 03:31:45 C 14 22 56.72 +22 05 25.2 c A24
2007-03-15 03:33:10 C 14 22 56.63 +22 05 29.6 c A24
2007-03-15 04:02:25 C 14 22 54.86 +22 06 59.0 c A24
2007-03-15 04:03:51 C 14 22 54.77 +22 07 03.4 c A24
2007-03-27 00:10:46 C 14 03 25.712 +34 04 07.4 r 084
2007-03-27 00:12:55 C 14 03 25.554 +34 04 11.6 r 084
2007-03-29 23:54:23 C 13 57 50.958 +36 15 33.0 r 084
2007-03-29 23:56:32 C 13 57 50.780 +36 15 36.5 r 084
2007-03-31 23:00:05 C 13 54 08.41 +37 31 34.8 o 084
2007-04-01 01:59:26 C 13 53 53.749 +37 36 07.2 r 084
2007-04-01 02:01:35 C 13 53 53.587 +37 36 10.1 r 084
2007-04-01 09:42:21 C 13 53 17.08 +37 47 50.7 r H45
2007-04-01 09:45:54 C 13 53 16.75 +37 47 55.7 r H45
2007-04-01 09:47:01 C 13 53 16.66 +37 47 57.5 r H45
2007-04-01 09:49:20 C 13 53 16.47 +37 48 00.6 r H45
2007-04-01 09:51:20 C 13 53 16.30 +37 48 03.7 r H45
2007-04-05 22:27:01 C 13 44 45.39 +40 10 36.4 17.3 r 130
2007-04-05 22:29:25 C 13 44 45.17 +40 10 38.9 17.4 r 130
2007-04-05 22:32:05 C 13 44 44.95 +40 10 42.1 17.5 r 130
2007-04-05 22:34:29 C 13 44 44.81 +40 10 45.0 17.4 r 130
2007-04-07 01:01:09 C 13 42 41.513 +40 39 47.0 r 084
2007-04-07 01:03:18 C 13 42 41.347 +40 39 49.4 r 084
2007-04-07 02:44:58 C 13 42 33.36 +40 41 39.6 c A24
2007-04-07 02:46:27 C 13 42 33.28 +40 41 40.8 c A24
2007-04-08 06:34:54 C 13 40 26.66 +41 09 58.3 17.8 c 704
2007-04-08 06:48:48 C 13 40 25.57 +41 10 11.9 17.7 c 704
2007-04-08 07:03:17 C 13 40 24.43 +41 10 26.7 17.9 c 704
2007-04-08 08:57:21 C 13 40 15.11 +41 12 15.1 r H45
2007-04-08 08:58:32 C 13 40 14.98 +41 12 16.5 r H45
2007-04-08 09:01:51 C 13 40 14.70 +41 12 19.4 r H45
2007-04-08 09:04:02 C 13 40 14.53 +41 12 21.7 r H45
2007-04-08 09:05:51 C 13 40 14.39 +41 12 23.2 r H45
2007-04-09 00:41:05 C 13 39 04.21 +41 27 06.8 c A24
2007-04-09 00:42:31 C 13 39 04.07 +41 27 08.6 c A24