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
2006-08-30 07:57:05 C 00 33 54.35 +08 57 04.1 16.8 c 704
2006-08-30 08:13:05 C 00 33 54.77 +08 56 23.5 16.9 c 704
2006-08-31 23:42:11 C 00 35 07.43 +07 10 48.8 o 204
2006-08-31 23:52:38 C 00 35 07.70 +07 10 19.6 o 204
2006-08-31 23:59:44 C 00 35 07.89 +07 09 59.7 o 204
2006-09-01 07:02:34 C 00 35 20.87 +06 50 07.4 16.3 c 704
2006-09-01 07:18:22 C 00 35 21.31 +06 49 22.5 16.4 c 704
2006-09-01 07:34:07 C 00 35 21.70 +06 48 37.6 16.7 c 704
2006-09-01 07:49:58 C 00 35 22.12 +06 47 52.3 16.4 c 704
2006-09-02 22:09:08 C 00 36 30.99 +04 53 09.6 o 108
2006-09-02 22:11:29 C 00 36 31.04 +04 53 01.1 o 108
2006-09-02 22:14:39 C 00 36 31.10 +04 52 49.5 o 108
2006-09-02 22:18:20 C 00 36 31.24 +04 52 40.6 o 108
2006-09-10 21:17:05 C 00 41 53.19 -07 33 16.1 15.2 r 084
2006-09-10 21:19:14 C 00 41 53.24 -07 33 26.0 15.3 r 084
2006-09-12 07:32:20 C 00 42 48.08 -10 20 28.1 15.0 c 704
2006-09-12 07:49:12 C 00 42 48.43 -10 21 53.4 15.3 c 704
2006-09-12 08:06:06 C 00 42 48.77 -10 23 18.6 15.3 c 704
2006-09-12 08:22:58 C 00 42 49.12 -10 24 43.7 15.5 c 704
2006-09-12 08:39:51 C 00 42 49.45 -10 26 09.0 15.2 c 704
2006-09-29 05:41:00 C 00 54 13.33 -50 49 38.5 r 808
2006-09-29 05:45:29 C 00 54 13.47 -50 50 07.0 r 808
2006-09-29 05:50:59 C 00 54 13.60 -50 50 37.5 r 808
2006-09-29 06:00:30 C 00 54 13.82 -50 51 32.6 r 808
2006-09-30 04:18:29 C 00 55 03.57 -52 57 41.4 r 808
2006-09-30 04:27:59 C 00 55 03.81 -52 58 35.7 r 808
2006-09-30 04:37:30 C 00 55 04.03 -52 59 28.2 r 808
2006-10-01 03:33:34 C 00 55 57.02 -55 05 17.5 c 844
2006-10-01 03:36:46 C 00 55 57.11 -55 05 34.8 c 844
2006-10-01 03:39:10 C 00 55 57.16 -55 05 47.8 c 844
2006-10-01 03:40:52 C 00 55 57.18 -55 05 57.1 c 844
2006-10-01 03:54:50 C 00 55 57.59 -55 07 12.6 c 844
2006-10-02 03:27:30 C 00 56 56.46 -57 12 03.3 r 808
2006-10-02 03:35:29 C 00 56 56.70 -57 12 45.2 r 808
2006-10-02 03:43:30 C 00 56 56.99 -57 13 27.2 r 808
2006-11-11 04:00:33 C 11 32 51.06 -81 59 19.4 c 844
2006-11-11 04:03:04 C 11 32 51.51 -81 59 16.9 c 844
2006-11-11 04:14:20 C 11 32 53.74 -81 59 03.8 c 844
2006-11-11 04:21:31 C 11 32 55.05 -81 58 55.8 c 844
2007-02-17 10:50:02 C 14 36 37.95 -14 45 50.2 16.3 c 704
2007-02-17 11:23:21 C 14 36 38.33 -14 43 55.8 16.5 c 704
2007-02-17 11:39:58 C 14 36 38.48 -14 42 59.1 16.5 c 704
2007-02-17 11:57:05 C 14 36 38.61 -14 41 59.6 16.4 c 704
2007-02-18 10:51:01 C 14 36 56.25 -13 22 10.2 17.4 c 704
2007-02-18 11:08:08 C 14 36 56.43 -13 21 10.3 17.5 c 704
2007-02-18 11:25:21 C 14 36 56.50 -13 20 10.2 17.6 c 704
2007-02-18 11:42:31 C 14 36 56.61 -13 19 09.7 17.7 c 704
2007-02-18 11:59:55 C 14 36 56.77 -13 18 08.8 17.3 c 704
2007-02-20 03:03:18 C 14 37 17.66 -10 59 35.1 16.4 r 084
2007-02-20 03:05:27 C 14 37 17.65 -10 59 27.3 16.1 r 084