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
2022-01-08 23:53:53 S 06 58 09.425 +34 49 24.89 – V C57
2022-01-08 23:53:53 s 1 -128302.75 9 +331741.47 1260.0 – C57
2022-01-09 00:03:53 S 06 58 07.846 +34 49 01.49 – V C57
2022-01-09 00:03:53 s 1 -128601.36 5 +331398.96 7370.0 – C57
2022-01-09 00:13:53 S 06 58 06.250 +34 48 39.02 – V C57
2022-01-09 00:13:53 s 1 -128899.59 1 +331055.45 1470.0 – C57
2022-01-09 00:23:53 S 06 58 04.601 +34 48 15.77 – V C57
2022-01-09 00:23:53 s 1 -129197.43 6 +330710.95 3560.0 – C57
2022-01-09 00:33:53 S 06 58 02.964 +34 47 52.04 – V C57
2022-01-09 00:33:53 s 1 -129494.89 8 +330365.44 3620.0 – C57
2022-01-09 00:43:53 S 06 58 01.342 +34 47 29.72 – V C57
2022-01-09 00:43:53 s 1 -129791.97 7 +330018.93 1650.0 – C57
2022-01-09 00:53:53 S 06 57 59.714 +34 47 04.24 – V C57
2022-01-09 00:53:53 s 1 -130088.66 9 +329671.42 7640.0 – C57
2022-01-09 01:03:53 S 06 57 58.001 +34 46 41.02 – V C57
2022-01-09 01:03:53 s 1 -130384.97 5 +329322.91 1590.0 – C57
2022-01-09 01:13:53 S 06 57 56.371 +34 46 18.37 – V C57
2022-01-09 01:13:53 s 1 -130680.89 1 +328973.40 3490.0 – C57
2022-01-09 01:23:53 S 06 57 54.804 +34 45 54.43 – V C57
2022-01-09 01:23:53 s 1 -130976.41 8 +328622.89 3330.0 – C57
2022-01-09 01:33:53 S 06 57 53.141 +34 45 31.28 – V C57
2022-01-09 01:33:53 s 1 -131271.55 2 +328271.37 1110.0 – C57
2022-01-09 01:43:53 S 06 57 51.547 +34 45 07.24 – V C57
2022-01-09 01:43:53 s 1 -131566.29 3 +327918.85 6810.0 – C57
2022-01-09 01:53:53 S 06 57 49.970 +34 44 44.99 – V C57
2022-01-09 01:53:53 s 1 -131860.63 9 +327565.32 440.0 – C57
2022-01-09 02:03:53 S 06 57 48.324 +34 44 21.48 – V C57
2022-01-09 02:03:53 s 1 -132154.58 9 +327210.79 1970.0 – C57
2022-01-09 02:13:53 S 06 57 46.694 +34 43 59.16 – V C57
2022-01-09 02:13:53 s 1 -132448.14 0 +326855.25 1420.0 – C57
2022-01-09 02:23:53 S 06 57 45.019 +34 43 35.44 – V C57
2022-01-09 02:23:53 s 1 -132741.29 2 +326498.71 8760.0 – C57
2022-01-09 02:33:53 S 06 57 43.404 +34 43 11.78 – V C57
2022-01-09 02:33:53 s 1 -133034.04 2 +326141.16 4000.0 – C57
2022-01-09 02:43:53 S 06 57 41.887 +34 42 48.02 – V C57
2022-01-09 02:43:53 s 1 -133326.38 9 +325782.61 7120.0 – C57
2022-01-09 02:53:53 S 06 57 40.142 +34 42 23.72 – V C57
2022-01-09 02:53:53 s 1 -133618.33 2 +325423.04 8110.0 – C57
2022-01-09 03:03:53 S 06 57 38.515 +34 42 00.47 – V C57
2022-01-09 03:03:53 s 1 -133909.86 9 +325062.47 6980.0 – C57
2022-01-09 03:13:53 S 06 57 36.922 +34 41 36.96 – V C57
2022-01-09 03:13:53 s 1 -134200.99 8 +324700.89 3710.0 – C57
2022-01-09 03:23:53 S 06 57 35.280 +34 41 13.45 – V C57
2022-01-09 03:23:53 s 1 -134491.71 8 +324338.31 8300.0 – C57
2022-01-09 03:33:53 S 06 57 33.564 +34 40 49.51 – V C57
2022-01-09 03:33:53 s 1 -134782.02 7 +323974.71 740.0 – C57
2022-01-09 03:43:53 S 06 57 32.040 +34 40 26.94 – V C57
2022-01-09 03:43:53 s 1 -135071.92 3 +323610.10 1010.0 – C57
2022-01-09 03:53:53 S 06 57 30.415 +34 40 03.11 – V C57
2022-01-09 03:53:53 s 1 -135361.40 5 +323244.48 9120.0 – C57