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
2007-04-09 01:00:38 C 13 39 02.65 +41 27 24.9 c A24
2007-04-09 01:20:11 C 13 39 01.13 +41 27 42.9 c A24
2007-04-09 01:38:18 C 13 38 59.70 +41 27 59.5 c A24
2007-04-09 01:39:44 C 13 38 59.58 +41 28 00.9 c A24
2007-04-09 01:57:09 C 13 38 58.24 +41 28 16.6 c A24
2007-04-09 02:16:00 C 13 38 56.78 +41 28 33.7 c A24
2007-04-09 02:33:24 C 13 38 55.43 +41 28 49.1 c A24
2007-04-09 02:34:50 C 13 38 55.33 +41 28 50.2 c A24
2007-04-10 00:13:17 C 13 37 18.82 +41 48 07.0 c A24
2007-04-10 00:14:42 C 13 37 18.72 +41 48 08.3 c A24
2007-04-10 00:29:58 C 13 37 17.53 +41 48 21.3 c A24
2007-04-10 00:46:40 C 13 37 16.29 +41 48 35.8 c A24
2007-04-10 00:57:35 C 13 37 15.240 +41 48 41.1 r 084
2007-04-10 00:59:45 C 13 37 15.078 +41 48 43.0 r 084
2007-04-10 01:01:56 C 13 37 15.04 +41 48 48.6 c A24
2007-04-10 01:03:21 C 13 37 14.96 +41 48 50.0 c A24
2007-04-10 01:19:19 C 13 37 13.71 +41 49 03.5 c A24
2007-04-10 01:36:43 C 13 37 12.38 +41 49 18.3 c A24
2007-04-10 01:52:41 C 13 37 11.11 +41 49 31.6 c A24
2007-04-10 01:54:08 C 13 37 10.99 +41 49 32.5 c A24
2007-04-10 20:19:25 C 13 35 50.61 +42 04 50.7 r A30
2007-04-10 20:21:20 C 13 35 50.47 +42 04 52.3 r A30
2007-04-10 20:23:18 C 13 35 50.32 +42 04 54.0 r A30
2007-04-10 20:25:26 C 13 35 50.17 +42 04 55.7 r A30
2007-04-11 01:13:28 C 13 35 28.28 +42 08 48.4 c A24
2007-04-11 01:14:59 C 13 35 28.14 +42 08 49.6 c A24
2007-04-12 00:57:33 C 13 33 45.36 +42 26 57.2 c A24
2007-04-12 00:59:00 C 13 33 45.21 +42 26 58.1 c A24
2007-04-12 11:16:46 C 13 33 00.61 +42 34 23.6 r 703
2007-04-12 11:24:32 C 13 33 00.00 +42 34 29.2 r 703
2007-04-12 11:32:22 C 13 32 59.42 +42 34 34.3 r 703
2007-04-12 11:40:07 C 13 32 59.02 +42 34 41.1 r 703
2007-04-14 21:09:25 C 13 29 00.69 +43 11 25.6 o A94
2007-04-14 21:17:42 C 13 29 00.13 +43 11 30.2 o A94
2007-04-14 21:27:07 C 13 28 59.50 +43 11 34.9 o A94
2007-04-17 00:29:35 C 13 25 37.37 +43 37 55.6 o A32
2007-04-17 00:40:14 C 13 25 36.67 +43 38 00.5 o A32
2007-04-17 00:50:54 C 13 25 35.97 +43 38 05.3 o A32
2007-04-18 00:53:37 C 13 24 04.86 +43 48 36.4 c A24
2007-04-18 01:09:12 C 13 24 03.86 +43 48 42.3 c A24
2007-04-18 01:26:14 C 13 24 02.78 +43 48 49.2 c A24
2007-04-18 01:41:50 C 13 24 01.78 +43 48 55.2 c A24
2007-04-18 01:43:16 C 13 24 01.67 +43 48 56.3 c A24
2007-04-18 01:58:52 C 13 24 00.66 +43 49 02.5 c A24
2007-04-18 02:15:53 C 13 23 59.56 +43 49 09.4 c A24
2007-04-18 02:31:30 C 13 23 58.45 +43 49 15.4 c A24
2007-04-18 02:32:56 C 13 23 58.46 +43 49 16.2 c A24
2007-04-21 01:02:02 C 13 19 47.83 +44 13 22.6 c A24
2007-04-21 01:03:28 C 13 19 47.72 +44 13 22.4 c A24
2007-04-22 06:25:58 C 13 18 10.77 +44 20 50.1 18.3 c 704