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
2021-10-02 11:03:57 s 1 +156649.73 8 +249900.27 5430.0 – C57
2021-10-02 11:23:57 S 00 28 26.746 -04 42 43.74 – V C57
2021-10-02 11:23:57 s 1 +156196.37 9 +250977.70 3630.0 – C57
2021-10-02 11:33:57 S 00 28 26.294 -04 42 42.77 – V C57
2021-10-02 11:33:57 s 1 +155968.46 1 +251514.40 3740.0 – C57
2021-10-02 12:03:57 S 00 28 23.966 -04 42 48.28 – V C57
2021-10-02 12:03:57 s 1 +155279.79 7 +253116.42 8290.0 – C57
2021-10-02 12:43:57 S 00 28 21.101 -04 42 44.86 – V C57
2021-10-02 12:43:57 s 1 +154350.26 6 +255233.68 1330.0 – C57
2021-10-02 12:53:57 S 00 28 20.784 -04 42 50.83 – V C57
2021-10-02 12:53:57 s 1 +154115.88 8 +255759.65 680.0 – C57
2021-10-02 13:33:57 S 00 28 17.815 -04 42 50.47 – V C57
2021-10-02 13:33:57 s 1 +153170.50 8 +257850.22 2770.0 – C57
2021-10-02 13:43:57 S 00 28 16.913 -04 42 52.20 – V C57
2021-10-02 13:43:57 s 1 +152932.21 4 +258369.53 9540.0 – C57
2021-10-02 14:13:57 S 00 28 14.597 -04 42 54.86 – V C57
2021-10-02 14:13:57 s 1 +152212.71 1 +259919.52 4980.0 – C57
2021-10-02 14:23:57 S 00 28 14.297 -04 43 00.70 – V C57
2021-10-02 14:23:57 s 1 +151971.34 9 +260433.53 1890.0 – C57
2021-10-02 15:13:57 S 00 28 10.330 -04 43 05.92 – V C57
2021-10-02 15:13:57 s 1 +150753.23 7 +262983.79 130.0 – C57
2021-10-02 15:33:57 S 00 28 09.458 -04 43 03.11 – V C57
2021-10-02 15:33:57 s 1 +150260.78 2 +263994.68 2710.0 – C57
2021-10-02 16:13:57 S 00 28 06.144 -04 43 08.72 – V C57
2021-10-02 16:13:57 s 1 +149267.09 3 +266000.71 9670.0 – C57
2021-10-02 16:23:57 S 00 28 05.971 -04 43 13.44 – V C57
2021-10-02 16:23:57 s 1 +149016.86 1 +266498.95 8110.0 – C57
2021-10-02 16:33:57 S 00 28 04.742 -04 43 09.23 – V C57
2021-10-02 16:33:57 s 1 +148765.91 2 +266995.87 4250.0 – C57
2021-10-02 16:43:57 S 00 28 04.135 -04 43 12.22 – V C57
2021-10-02 16:43:57 s 1 +148514.24 9 +267491.50 8090.0 – C57
2021-10-02 17:03:57 S 00 28 02.822 -04 43 13.37 – V C57
2021-10-02 17:03:57 s 1 +148008.79 5 +268478.83 8950.0 – C57
2021-10-02 17:13:57 S 00 28 02.213 -04 43 15.67 – V C57
2021-10-02 17:13:57 s 1 +147755.01 0 +268970.55 5990.0 – C57
2021-10-02 17:33:57 S 00 28 00.530 -04 43 18.08 – V C57
2021-10-02 17:33:57 s 1 +147245.34 1 +269950.08 3340.0 – C57
2021-10-02 18:13:57 S 00 27 57.910 -04 43 19.63 – V C57
2021-10-02 18:13:57 s 1 +146217.69 7 +271893.58 1400.0 – C57
2021-10-02 18:23:57 S 00 27 57.403 -04 43 18.19 – V C57
2021-10-02 18:23:57 s 1 +145959.07 3 +272376.22 2920.0 – C57
2021-10-02 18:33:57 S 00 27 56.189 -04 43 19.96 – V C57
2021-10-02 18:33:57 s 1 +145699.77 1 +272857.57 2270.0 – C57
2021-10-02 19:03:57 S 00 27 54.228 -04 43 24.64 – V C57
2021-10-02 19:03:57 s 1 +144917.82 5 +274293.89 7380.0 – C57
2021-10-02 19:23:57 S 00 27 53.014 -04 43 27.23 – V C57
2021-10-02 19:23:57 s 1 +144393.19 1 +275245.00 6760.0 – C57
2021-10-02 19:43:57 S 00 27 51.706 -04 43 29.75 – V C57
2021-10-02 19:43:57 s 1 +143865.91 6 +276190.97 7690.0 – C57
2021-10-02 20:03:57 S 00 27 49.980 -04 43 31.22 – V C57