IAA RAS IAA Minor Planet Database

85839 (1998 YO4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2481006912 ± 1.24e-08
Semi-major axis (a)1.6534926704 AU ± 9.96e-10
Inclination (i)9.31939239° ± 8.81e-07
Long. of Asc. Node (Ω)28.50072273° ± 2.80e-06
Arg. of Perihelion (ω)199.69071851° ± 2.99e-06
Mean Anomaly (M)97.04138343° ± 2.26e-06
Mean Motion (n)0.4635631070°/day ± 4.19e-10
Perihelion dist (q)1.24326000 AU ± 2.05e-08
Aphelion dist (Q)2.06372534 AU ± 2.05e-08
Orbital Period2.12619656 yr ± 1.92e-09
Physical Parameters
H (abs. magnitude)16.58
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.072″
Uncertainty0
Orbit TypeAmor
MOID0.239954 AU
Observations Used2510
Gaia Obs Used50
Oppositions12
Arc Total1993-2025
First Observation Used1993-04-25
Last Observation Used2025-11-08
Observations (3041)
Date Type RA Dec Mag Band Observatory
2021-09-22 01:33:57 s 1 +23803.760 0 +367069.09 8120.0 – C57
2021-09-22 06:13:57 S 00 44 28.685 -04 15 50.98 – V C57
2021-09-22 06:13:57 s 1 +13225.776 0 +369212.25 7860.0 – C57
2021-09-22 07:03:57 S 00 44 25.685 -04 15 51.66 – V C57
2021-09-22 07:03:57 s 1 +11332.719 0 +369507.06 1790.0 – C57
2021-09-22 08:23:57 S 00 44 20.294 -04 16 11.64 – V C57
2021-09-22 13:13:57 S 00 44 00.886 -04 16 49.37 – V C57
2021-09-22 16:33:57 S 00 43 47.357 -04 17 22.88 – V C57
2021-09-22 16:33:57 s 1 -10278.888 0 +370995.78 2430.0 – C57
2021-09-22 18:43:57 S 00 43 39.149 -04 17 46.43 – V C57
2021-09-22 18:43:57 s 1 -15203.547 0 +370854.76 5870.0 – C57
2021-09-22 19:53:57 S 00 43 34.097 -04 17 53.48 – V C57
2021-09-22 19:53:57 s 1 -17852.702 0 +370705.06 2220.0 – C57
2021-09-22 21:23:57 S 00 43 28.399 -04 18 07.96 – V C57
2021-09-22 21:23:57 s 1 -21255.358 0 +370436.73 50.0 – C57
2021-09-22 22:33:57 S 00 43 23.609 -04 18 16.67 – V C57
2021-09-22 22:33:57 s 1 -23898.762 0 +370169.03 9890.0 – C57
2021-09-23 00:23:57 S 00 43 16.603 -04 18 37.30 – V C57
2021-09-23 00:23:57 s 1 -28046.236 0 +369644.09 1640.0 – C57
2021-09-23 01:23:57 S 00 43 12.312 -04 18 39.42 – V C57
2021-09-23 01:23:57 s 1 -30304.734 0 +369304.02 330.0 – C57
2021-09-23 02:33:57 S 00 43 07.927 -04 18 50.80 – V C57
2021-09-23 02:33:57 s 1 -32935.899 0 +368859.33 8310.0 – C57
2021-09-23 03:53:57 S 00 43 02.734 -04 19 06.20 – V C57
2021-09-23 03:53:57 s 1 -35937.544 0 +368287.85 6890.0 – C57
2021-09-23 04:03:57 S 00 43 01.884 -04 19 09.26 – V C57
2021-09-23 04:03:57 s 1 -36312.319 0 +368211.67 4980.0 – C57
2021-09-23 04:13:57 S 00 43 01.366 -04 19 06.31 – V C57
2021-09-23 04:13:57 s 1 -36686.994 0 +368134.44 2670.0 – C57
2021-09-23 05:13:57 S 00 42 57.132 -04 19 17.26 – V C57
2021-09-23 05:13:57 s 1 -38932.892 0 +367648.87 250.0 – C57
2021-09-23 06:43:57 S 00 42 51.545 -04 19 27.05 – V C57
2021-09-23 06:43:57 s 1 -42294.431 0 +366849.27 7790.0 – C57
2021-09-23 06:53:57 S 00 42 50.489 -04 19 28.88 – V C57
2021-09-23 06:53:57 s 1 -42667.364 0 +366755.15 8620.0 – C57
2021-09-23 07:33:57 S 00 42 48.286 -04 19 33.35 – V C57
2021-09-23 07:33:57 s 1 -44157.903 0 +366368.08 7270.0 – C57
2021-09-23 08:03:57 S 00 42 46.313 -04 19 38.50 – V C57
2021-09-23 08:03:57 s 1 -45274.523 0 +366066.68 1290.0 – C57
2021-09-23 09:23:57 S 00 42 40.579 -04 19 48.22 – V C57
2021-09-23 09:23:57 s 1 -48246.544 0 +365216.41 3640.0 – C57
2021-09-23 10:13:57 S 00 42 37.519 -04 19 55.78 – V C57
2021-09-23 10:13:57 s 1 -50099.703 0 +364650.59 3440.0 – C57
2021-09-23 11:53:57 S 00 42 31.202 -04 20 12.37 – V C57
2021-09-23 11:53:57 s 1 -53795.318 0 +363439.47 2390.0 – C57
2021-09-23 12:33:57 S 00 42 28.133 -04 20 23.46 – V C57
2021-09-23 12:33:57 s 1 -55269.366 0 +362925.32 8110.0 – C57
2021-09-23 13:23:57 S 00 42 24.785 -04 20 24.86 – V C57
2021-09-23 13:23:57 s 1 -57108.381 0 +362258.76 4010.0 – C57
2021-09-23 13:53:57 S 00 42 23.172 -04 20 32.53 – V C57