IAA RAS IAA Minor Planet Database

18882 (1999 YN4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2321218724 ± 9.10e-09
Semi-major axis (a)1.6850068777 AU ± 1.15e-09
Inclination (i)36.81465272° ± 5.29e-07
Long. of Asc. Node (Ω)291.66685521° ± 7.61e-07
Arg. of Perihelion (ω)242.66795075° ± 2.19e-06
Mean Anomaly (M)230.13214226° ± 2.27e-06
Mean Motion (n)0.4506192696°/day ± 4.60e-10
Perihelion dist (q)1.29387993 AU ± 1.54e-08
Aphelion dist (Q)2.07613383 AU ± 1.54e-08
Orbital Period2.18727061 yr ± 2.23e-09
Physical Parameters
H (abs. magnitude)16.14
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.067″
Uncertainty0
Orbit TypeAmor
MOID0.430698 AU
Observations Used2638
Gaia Obs Used122
Oppositions34
Arc Total1954-2025
First Observation Used1954-01-04
Last Observation Used2025-12-18
Observations (4085)
Date Type RA Dec Mag Band Observatory
2022-01-06 23:43:53 S 07 06 05.863 +36 38 00.82 – V C57
2022-01-06 23:43:53 s 1 -31241.150 0 +390476.88 6100.0 – C57
2022-01-06 23:53:53 S 07 06 04.236 +36 37 38.60 – V C57
2022-01-06 23:53:53 s 1 -31599.020 0 +390408.08 4050.0 – C57
2022-01-07 00:03:53 S 07 06 02.582 +36 37 18.70 – V C57
2022-01-07 00:03:53 s 1 -31956.827 0 +390338.36 1420.0 – C57
2022-01-07 00:13:53 S 07 06 00.931 +36 36 55.48 – V C57
2022-01-07 00:13:53 s 1 -32314.573 0 +390267.73 8210.0 – C57
2022-01-07 01:23:53 S 07 05 49.188 +36 34 23.34 – V C57
2022-01-07 01:23:53 s 1 -34816.959 0 +389747.57 9410.0 – C57
2022-01-07 01:33:53 S 07 05 47.496 +36 34 01.85 – V C57
2022-01-07 01:33:53 s 1 -35174.171 0 +389669.59 1480.0 – C57
2022-01-07 01:43:53 S 07 05 45.859 +36 33 38.99 – V C57
2022-01-07 01:43:53 s 1 -35531.312 0 +389590.69 2940.0 – C57
2022-01-07 01:53:53 S 07 05 44.158 +36 33 18.76 – V C57
2022-01-07 01:53:53 s 1 -35888.382 0 +389510.88 3790.0 – C57
2022-01-07 02:03:53 S 07 05 42.526 +36 32 56.08 – V C57
2022-01-07 02:03:53 s 1 -36245.380 0 +389430.14 4020.0 – C57
2022-01-07 02:13:53 S 07 05 40.891 +36 32 34.08 – V C57
2022-01-07 02:13:53 s 1 -36602.304 0 +389348.49 3630.0 – C57
2022-01-07 02:23:53 S 07 05 39.247 +36 32 12.41 – V C57
2022-01-07 02:23:53 s 1 -36959.154 0 +389265.91 2610.0 – C57
2022-01-07 02:33:53 S 07 05 37.644 +36 31 51.28 – V C57
2022-01-07 02:33:53 s 1 -37315.929 0 +389182.42 970.0 – C57
2022-01-07 02:43:53 S 07 05 35.947 +36 31 29.96 – V C57
2022-01-07 02:43:53 s 1 -37672.629 0 +389098.01 8700.0 – C57
2022-01-07 02:53:53 S 07 05 34.308 +36 31 07.72 – V C57
2022-01-07 02:53:53 s 1 -38029.251 0 +389012.68 5780.0 – C57
2022-01-07 03:03:53 S 07 05 32.635 +36 30 45.97 – V C57
2022-01-07 03:03:53 s 1 -38385.796 0 +388926.44 2230.0 – C57
2022-01-07 03:13:53 S 07 05 31.051 +36 30 23.54 – V C57
2022-01-07 03:13:53 s 1 -38742.263 0 +388839.27 8030.0 – C57
2022-01-07 03:23:53 S 07 05 29.340 +36 30 02.52 – V C57
2022-01-07 03:23:53 s 1 -39098.650 0 +388751.18 3190.0 – C57
2022-01-07 03:33:53 S 07 05 27.598 +36 29 40.24 – V C57
2022-01-07 03:33:53 s 1 -39454.957 0 +388662.18 7690.0 – C57
2022-01-07 03:43:53 S 07 05 26.002 +36 29 19.18 – V C57
2022-01-07 03:43:53 s 1 -39811.183 0 +388572.25 1540.0 – C57
2022-01-07 03:53:53 S 07 05 24.331 +36 28 57.29 – V C57
2022-01-07 03:53:53 s 1 -40167.326 0 +388481.41 4720.0 – C57
2022-01-07 04:03:53 S 07 05 22.644 +36 28 34.50 – V C57
2022-01-07 04:03:53 s 1 -40523.387 0 +388389.65 7240.0 – C57
2022-01-07 04:13:53 S 07 05 20.954 +36 28 11.96 – V C57
2022-01-07 04:13:53 s 1 -40879.364 0 +388296.96 9100.0 – C57
2022-01-07 04:23:53 S 07 05 19.387 +36 27 52.13 – V C57
2022-01-07 04:23:53 s 1 -41235.256 0 +388203.36 280.0 – C57
2022-01-07 04:33:53 S 07 05 17.654 +36 27 29.30 – V C57
2022-01-07 04:33:53 s 1 -41591.063 0 +388108.84 780.0 – C57
2022-01-07 04:43:53 S 07 05 15.962 +36 27 06.84 – V C57
2022-01-07 04:43:53 s 1 -41946.783 0 +388013.40 610.0 – C57