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
2021-12-31 14:13:53 S 07 30 35.340 +41 22 29.71 – V C57
2021-12-31 14:13:53 s 1 +153008.19 8 +17930.078 6010.0 – C57
2021-12-31 14:23:53 S 07 30 34.078 +41 22 15.60 – V C57
2021-12-31 14:23:53 s 1 +153442.84 1 +18884.420 9830.0 – C57
2021-12-31 14:33:53 S 07 30 32.650 +41 21 59.90 – V C57
2021-12-31 14:33:53 s 1 +153872.83 5 +19838.193 3730.0 – C57
2021-12-31 14:43:53 S 07 30 31.301 +41 21 43.85 – V C57
2021-12-31 14:43:53 s 1 +154298.21 3 +20791.374 7850.0 – C57
2021-12-31 14:53:53 S 07 30 30.072 +41 21 24.34 – V C57
2021-12-31 14:53:53 s 1 +154719.01 0 +21743.942 2350.0 – C57
2021-12-31 18:33:53 S 07 29 58.742 +41 15 52.81 – V C57
2021-12-31 18:33:53 s 1 +162881.56 3 +42505.716 5090.0 – C57
2021-12-31 18:43:53 S 07 29 57.538 +41 15 36.79 – V C57
2021-12-31 18:43:53 s 1 +163205.59 7 +43439.026 6950.0 – C57
2021-12-31 19:53:53 S 07 29 48.077 +41 13 49.04 – V C57
2021-12-31 19:53:53 s 1 +165367.36 1 +49942.913 8180.0 – C57
2021-12-31 20:13:53 S 07 29 44.546 +41 13 20.64 – V C57
2021-12-31 20:13:53 s 1 +165951.57 9 +51791.404 1150.0 – C57
2021-12-31 20:23:53 S 07 29 43.560 +41 13 03.47 – V C57
2021-12-31 20:23:53 s 1 +166238.24 6 +52713.968 4600.0 – C57
2021-12-31 20:33:53 S 07 29 42.065 +41 12 47.23 – V C57
2021-12-31 20:33:53 s 1 +166521.31 8 +53635.397 2840.0 – C57
2021-12-31 20:43:53 S 07 29 40.697 +41 12 32.87 – V C57
2021-12-31 20:43:53 s 1 +166800.82 2 +54555.682 5990.0 – C57
2021-12-31 20:53:53 S 07 29 39.286 +41 12 18.65 – V C57
2021-12-31 20:53:53 s 1 +167076.78 0 +55474.813 4150.0 – C57
2021-12-31 21:03:53 S 07 29 37.850 +41 12 03.53 – V C57
2021-12-31 21:03:53 s 1 +167349.21 9 +56392.781 7420.0 – C57
2021-12-31 21:13:53 S 07 29 36.506 +41 11 47.72 – V C57
2021-12-31 21:13:53 s 1 +167618.16 2 +57309.576 5930.0 – C57
2021-12-31 21:23:53 S 07 29 34.978 +41 11 30.37 – V C57
2021-12-31 21:23:53 s 1 +167883.63 4 +58225.190 9780.0 – C57
2021-12-31 21:33:53 S 07 29 33.370 +41 11 16.08 – V C57
2021-12-31 21:33:53 s 1 +168145.65 9 +59139.614 9060.0 – C57
2021-12-31 21:43:53 S 07 29 32.261 +41 11 00.60 – V C57
2021-12-31 21:43:53 s 1 +168404.25 9 +60052.839 3900.0 – C57
2021-12-31 21:53:53 S 07 29 30.595 +41 10 44.94 – V C57
2021-12-31 21:53:53 s 1 +168659.46 0 +60964.858 4380.0 – C57
2021-12-31 22:03:53 S 07 29 29.275 +41 10 29.82 – V C57
2021-12-31 22:03:53 s 1 +168911.28 4 +61875.661 620.0 – C57
2021-12-31 22:13:53 S 07 29 27.742 +41 10 13.62 – V C57
2021-12-31 22:13:53 s 1 +169159.75 4 +62785.242 2710.0 – C57
2021-12-31 22:23:53 S 07 29 26.381 +41 09 57.53 – V C57
2021-12-31 22:23:53 s 1 +169404.89 3 +63693.592 770.0 – C57
2021-12-31 22:33:53 S 07 29 24.823 +41 09 43.34 – V C57
2021-12-31 22:33:53 s 1 +169646.72 4 +64600.705 4880.0 – C57
2021-12-31 22:43:53 S 07 29 23.539 +41 09 26.93 – V C57
2021-12-31 22:43:53 s 1 +169885.27 0 +65506.572 5150.0 – C57
2021-12-31 22:53:53 S 07 29 22.075 +41 09 11.99 – V C57
2021-12-31 22:53:53 s 1 +170120.55 3 +66411.187 1670.0 – C57