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
2024-04-22 11:48:10 C 15 11 36.453 +41 58 42.59 X F52
2024-04-22 11:53:01 S 15 11 48.869 +41 56 56.26 V C57
2024-04-22 11:53:01 s 1 -97577.485 0 +60591.157 0.074 C57
2024-04-22 11:54:13 C 15 11 35.998 +41 58 46.42 X F51
2024-04-22 12:02:40 C 15 11 35.365 +41 58 51.83 X F52
2024-04-22 12:09:27 C 15 11 34.857 +41 58 56.16 X F51
2024-04-22 12:17:13 C 15 11 34.276 +41 59 01.03 X F52
2024-04-22 12:31:48 C 15 11 33.175 +41 59 10.33 X F52
2024-04-22 13:13:00 S 15 11 42.564 +41 58 00.73 V C57
2024-04-22 13:13:00 s 1 -100064.64 8 +52622.170 0.787 C57
2024-04-22 13:53:01 S 15 11 39.374 +41 58 24.85 V C57
2024-04-22 13:53:01 s 1 -101236.37 1 +48598.093 0.825 C57
2024-04-22 19:33:01 S 15 11 12.938 +42 02 40.42 V C57
2024-04-22 19:33:01 s 1 -109025.06 0 +13595.731 0.446 C57
2024-04-22 20:13:01 S 15 11 09.571 +42 03 09.61 V C57
2024-04-22 20:13:01 s 1 -109661.37 2 + 9415.643 0.624 C57
2024-04-22 20:33:01 S 15 11 08.731 +42 03 28.80 V C57
2024-04-22 20:33:01 s 1 -109955.59 9 + 7323.368 0.878 C57
2024-04-22 21:13:00 S 15 11 05.441 +42 03 56.48 V C57
2024-04-22 21:13:00 s 1 -110495.52 6 + 3135.853 0.757 C57
2024-04-23 12:22:06 C 15 09 49.820 +42 13 55.80 X F52
2024-04-23 12:39:23 C 15 09 48.515 +42 14 06.10 X F52
2024-04-23 12:56:56 C 15 09 47.191 +42 14 16.45 X F52
2024-04-23 12:59:43 C 15 09 46.988 +42 14 18.11 X F51
2024-04-23 13:12:08 C 15 09 46.057 +42 14 25.40 X F51
2024-04-23 13:14:18 C 15 09 45.891 +42 14 26.73 X F52
2024-04-23 13:24:30 C 15 09 45.121 +42 14 32.69 X F51
2024-04-23 13:36:48 C 15 09 44.205 +42 14 39.88 X F51
2024-04-25 13:13:31 C 15 06 16.730 +42 41 20.67 X F51
2024-04-25 13:29:46 C 15 06 15.512 +42 41 29.06 X F51
2024-04-25 13:45:59 C 15 06 14.293 +42 41 37.27 X F51
2024-04-25 14:02:07 C 15 06 13.081 +42 41 45.51 X F51
2024-04-26 12:50:14 C 15 04 33.684 +42 53 15.48 X F52
2024-04-26 13:08:12 C 15 04 32.330 +42 53 23.99 X F52
2024-04-26 13:26:13 C 15 04 30.973 +42 53 32.44 X F52
2024-04-26 13:44:17 C 15 04 29.612 +42 53 41.02 X F52
2024-04-26 13:45:37 C 15 04 29.518 +42 53 41.76 X F51
2024-04-26 14:10:45 C 15 04 27.629 +42 53 53.52 X F51
2024-04-26 14:24:09 C 15 04 26.631 +42 53 59.82 X F51
2024-04-26 14:37:19 C 15 04 25.646 +42 54 05.98 X F51
2024-04-27 10:11:59 C 15 03 00.910 +43 03 17.71 V T05
2024-04-27 10:15:16 C 15 03 00.631 +43 03 18.94 V T05
2024-04-27 10:19:50 C 15 03 00.317 +43 03 21.38 V T05
2024-04-27 10:30:18 C 15 02 59.518 +43 03 26.35 V T05
2024-04-27 14:25:28 C 15 02 41.809 +43 05 09.99 X F52
2024-04-27 14:32:07 C 15 02 41.314 +43 05 12.86 X F52
2024-04-27 14:38:45 C 15 02 40.824 +43 05 15.66 X F52
2024-04-27 14:45:20 C 15 02 40.331 +43 05 18.50 X F52
2024-04-29 09:49:06 C 14 59 33.850 +43 23 08.58 X F52
2024-04-29 10:06:10 C 14 59 32.570 +43 23 15.19 X F52