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
2024-04-19 10:13:01 S 15 17 01.294 +41 03 07.70 V C57
2024-04-19 10:13:01 s 1 +122416.46 2 +272464.23 7700.0 C57
2024-04-19 10:51:22 C 15 16 48.893 +41 07 46.16 V T05
2024-04-19 10:53:59 C 15 16 48.758 +41 07 48.11 V T05
2024-04-19 10:59:19 C 15 16 48.317 +41 07 52.28 V T05
2024-04-19 11:07:08 C 15 16 47.789 +41 07 57.79 V T05
2024-04-19 23:13:01 S 15 16 08.880 +41 12 42.66 V C57
2024-04-19 23:13:01 s 1 +85548.208 0 +264340.13 4960.0 C57
2024-04-20 03:53:01 S 15 15 49.752 +41 16 07.75 V C57
2024-04-20 03:53:01 s 1 +71469.830 0 +258956.48 3820.0 C57
2024-04-20 04:13:01 S 15 15 48.571 +41 16 19.81 V C57
2024-04-20 04:13:01 s 1 +70449.001 0 +258518.37 4690.0 C57
2024-04-20 07:56:49 C 15 15 19.357 +41 23 21.37 V 703
2024-04-20 08:01:13 C 15 15 19.073 +41 23 24.58 V 703
2024-04-20 08:05:37 C 15 15 18.738 +41 23 27.78 V 703
2024-04-20 08:09:58 C 15 15 18.396 +41 23 31.85 V 703
2024-04-20 08:13:01 S 15 15 32.086 +41 19 14.27 V C57
2024-04-20 08:13:01 s 1 +58052.436 0 +252682.62 8950.0 C57
2024-04-20 12:22:33 C 15 15 00.254 +41 26 34.31 X F51
2024-04-20 12:36:55 C 15 14 59.190 +41 26 44.53 X F51
2024-04-20 12:51:15 C 15 14 58.119 +41 26 54.70 X F51
2024-04-20 13:05:34 C 15 14 57.067 +41 27 04.82 X F51
2024-04-20 23:53:01 S 15 14 27.074 +41 30 44.17 V C57
2024-04-21 00:13:01 S 15 14 25.793 +41 30 57.31 V C57
2024-04-21 00:33:01 S 15 14 24.677 +41 31 17.26 V C57
2024-04-21 01:13:01 S 15 14 21.110 +41 31 43.72 V C57
2024-04-21 01:33:01 S 15 14 20.126 +41 31 54.80 V C57
2024-04-21 01:53:01 S 15 14 18.814 +41 32 09.17 V C57
2024-04-21 02:33:01 S 15 14 15.948 +41 32 38.54 V C57
2024-04-21 02:53:01 S 15 14 14.671 +41 32 50.86 V C57
2024-04-21 03:13:01 S 15 14 12.929 +41 33 07.96 V C57
2024-04-21 04:33:01 S 15 14 07.438 +41 34 07.46 V C57
2024-04-21 04:53:01 S 15 14 06.070 +41 34 21.47 V C57
2024-04-21 05:13:01 S 15 14 04.258 +41 34 38.53 V C57
2024-04-21 05:33:01 S 15 14 03.559 +41 34 54.70 V C57
2024-04-21 05:33:01 s 1 -11089.766 0 +201545.94 0.227 C57
2024-04-21 05:53:01 S 15 14 02.059 +41 35 06.97 V C57
2024-04-21 05:53:01 s 1 -12182.409 0 +200452.15 0.412 C57
2024-04-21 06:13:01 S 15 14 00.715 +41 35 20.04 V C57
2024-04-21 06:13:01 s 1 -13274.432 0 +199348.64 0.398 C57
2024-04-21 06:53:01 S 15 13 57.785 +41 35 49.42 V C57
2024-04-21 06:53:01 s 1 -15456.368 0 +197112.06 0.352 C57
2024-04-21 07:13:01 S 15 13 55.934 +41 36 04.72 V C57
2024-04-21 07:13:01 s 1 -16546.168 0 +195979.05 0.228 C57
2024-04-21 07:33:01 S 15 13 54.883 +41 36 15.95 V C57
2024-04-21 07:33:01 s 1 -17635.100 0 +194836.09 0.557 C57
2024-04-21 07:53:01 S 15 13 52.992 +41 36 32.80 V C57
2024-04-21 07:53:01 s 1 -18723.107 0 +193683.22 0.291 C57
2024-04-21 08:13:01 S 15 13 52.123 +41 36 52.92 V C57
2024-04-21 08:13:01 s 1 -19810.130 0 +192520.45 0.384 C57