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
2021-09-23 13:53:57 s 1 -58209.850 0 +361846.06 550.0 – C57
2021-09-23 14:03:57 S 00 42 22.524 -04 20 31.06 – V C57
2021-09-23 14:03:57 s 1 -58576.676 0 +361706.36 8170.0 – C57
2021-09-23 14:23:57 S 00 42 21.070 -04 20 38.40 – V C57
2021-09-23 14:23:57 s 1 -59309.824 0 +361423.78 1520.0 – C57
2021-09-23 14:33:57 S 00 42 20.306 -04 20 36.71 – V C57
2021-09-23 14:33:57 s 1 -59676.144 0 +361280.89 7240.0 – C57
2021-09-23 14:43:57 S 00 42 20.261 -04 20 42.61 – V C57
2021-09-23 14:43:57 s 1 -60042.293 0 +361136.94 2340.0 – C57
2021-09-23 18:03:57 S 00 42 06.802 -04 21 08.10 – V C57
2021-09-23 18:03:57 s 1 -67327.541 0 +358034.00 4480.0 – C57
2021-09-23 20:23:57 S 00 41 57.583 -04 21 29.30 – V C57
2021-09-23 20:23:57 s 1 -72381.094 0 +355607.46 8470.0 – C57
2021-09-23 20:43:57 S 00 41 56.162 -04 21 30.56 – V C57
2021-09-23 20:43:57 s 1 -73099.693 0 +355243.65 8290.0 – C57
2021-09-23 20:53:57 S 00 41 55.639 -04 21 31.82 – V C57
2021-09-23 20:53:57 s 1 -73458.670 0 +355060.13 7020.0 – C57
2021-09-23 21:03:57 S 00 41 55.010 -04 21 32.15 – V C57
2021-09-23 21:03:57 s 1 -73817.429 0 +354875.54 4960.0 – C57
2021-09-23 21:23:57 S 00 41 54.130 -04 21 39.49 – V C57
2021-09-23 21:23:57 s 1 -74534.290 0 +354503.14 8460.0 – C57
2021-09-23 22:03:57 S 00 41 51.142 -04 21 38.52 – V C57
2021-09-23 22:03:57 s 1 -75965.349 0 +353745.41 5780.0 – C57
2021-09-23 22:23:57 S 00 41 50.126 -04 21 44.71 – V C57
2021-09-23 22:23:57 s 1 -76679.527 0 +353360.08 9530.0 – C57
2021-09-23 22:33:57 S 00 41 49.570 -04 21 46.44 – V C57
2021-09-23 22:33:57 s 1 -77036.273 0 +353165.81 170.0 – C57
2021-09-23 23:33:57 S 00 41 45.386 -04 21 55.62 – V C57
2021-09-23 23:33:57 s 1 -79171.874 0 +351977.49 6350.0 – C57
2021-09-23 23:43:57 S 00 41 45.038 -04 21 59.47 – V C57
2021-09-23 23:43:57 s 1 -79526.983 0 +351775.65 1070.0 – C57
2021-09-24 01:13:57 S 00 41 38.902 -04 22 10.78 – V C57
2021-09-24 01:13:57 s 1 -82712.043 0 +349910.51 4170.0 – C57
2021-09-24 01:43:57 S 00 41 37.152 -04 22 18.59 – V C57
2021-09-24 01:43:57 s 1 -83769.258 0 +349269.30 9110.0 – C57
2021-09-24 02:23:57 S 00 41 34.594 -04 22 16.54 – V C57
2021-09-24 02:23:57 s 1 -85175.303 0 +348399.17 6200.0 – C57
2021-09-24 03:03:57 S 00 41 31.418 -04 22 23.09 – V C57
2021-09-24 03:03:57 s 1 -86577.180 0 +347511.65 8340.0 – C57
2021-09-24 03:13:57 S 00 41 31.397 -04 22 30.43 – V C57
2021-09-24 03:13:57 s 1 -86926.988 0 +347287.05 4010.0 – C57
2021-09-24 03:23:57 S 00 41 30.221 -04 22 32.92 – V C57
2021-09-24 03:23:57 s 1 -87276.529 0 +347061.36 8720.0 – C57
2021-09-24 03:43:57 S 00 41 29.239 -04 22 32.77 – V C57
2021-09-24 03:43:57 s 1 -87974.804 0 +346606.72 5250.0 – C57
2021-09-24 04:33:57 S 00 41 25.759 -04 22 37.92 – V C57
2021-09-24 04:33:57 s 1 -89715.716 0 +345451.05 4540.0 – C57
2021-09-24 05:13:57 S 00 41 23.222 -04 22 45.84 – V C57
2021-09-24 05:13:57 s 1 -91103.445 0 +344506.86 6110.0 – C57
2021-09-24 06:43:57 S 00 41 17.398 -04 23 00.82 – V C57