138893 (2000 YH66)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7436157463 ± 1.83e-08
Semi-major axis (a)1.1728848238 AU ± 1.23e-09
Inclination (i)18.35871670° ± 2.42e-06
Long. of Asc. Node (Ω)265.23919426° ± 4.55e-06
Arg. of Perihelion (ω)341.39952174° ± 3.89e-06
Mean Anomaly (M)137.20864144° ± 6.31e-06
Mean Motion (n)0.7759419391°/day ± 1.22e-09
Perihelion dist (q)0.30070920 AU ± 2.14e-08
Aphelion dist (Q)2.04506045 AU ± 2.15e-08
Orbital Period1.27023200 yr ± 2.00e-09
Physical Parameters
H (abs. magnitude)18.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.049″
Uncertainty0
Orbit TypeApollo
MOID0.164817 AU
Observations Used513
Gaia Obs Used36
Oppositions3
Arc Total2000-2016
First Observation Used2000-12-30
Last Observation Used2025-12-20
Observations (571)
Date Type RA Dec Mag Band Observatory
2025-11-27 13:52:42 C 03 05 20.63 +34 09 27.1 V D29
2025-11-27 14:13:04 C 03 05 18.45 +34 09 10.0 V D29
2025-11-28 07:20:15 C 03 03 30.450 +33 54 59.95 X F52
2025-11-28 07:36:07 C 03 03 28.759 +33 54 46.87 X F52
2025-11-28 07:51:57 C 03 03 27.068 +33 54 33.83 X F52
2025-11-28 08:07:49 C 03 03 25.368 +33 54 20.66 X F52
2025-11-28 15:24:38 C 03 02 39.80 +33 48 14.4 V D29
2025-11-28 15:45:00 C 03 02 37.65 +33 47 58.4 V D29
2025-11-28 16:05:22 C 03 02 35.47 +33 47 41.2 V D29
2025-12-09 06:43:29 C 02 40 19.747 +30 14 44.52 V G96
2025-12-09 06:50:58 C 02 40 19.204 +30 14 39.05 V G96
2025-12-09 06:58:27 C 02 40 18.685 +30 14 32.75 V G96
2025-12-09 07:05:56 C 02 40 18.181 +30 14 26.45 V G96
2025-12-09 09:28:47 C 02 40 08.024 +30 12 31.99 X F52
2025-12-09 09:44:45 C 02 40 06.860 +30 12 18.84 X F52
2025-12-09 10:00:43 C 02 40 05.687 +30 12 05.80 X F52
2025-12-09 10:16:46 C 02 40 04.511 +30 11 52.36 X F52
2025-12-20 05:08:02 C 02 25 51.125 +26 56 32.46 V V00
2025-12-20 05:16:05 C 02 25 50.801 +26 56 26.77 V V00
2025-12-20 05:24:08 C 02 25 50.452 +26 56 21.34 V V00
2025-12-20 05:32:11 C 02 25 50.128 +26 56 15.86 V V00