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
2022-01-07 08:43:53 S 07 04 36.254 +36 18 21.06 V C57
2022-01-07 08:43:53 s 1 -50455.796 0 +385446.56 1800.0 C57
2022-01-07 08:53:53 S 07 04 34.574 +36 17 59.06 V C57
2022-01-07 08:53:53 s 1 -50809.062 0 +385328.08 3300.0 C57
2022-01-07 09:03:53 S 07 04 32.914 +36 17 37.18 V C57
2022-01-07 09:03:53 s 1 -51162.219 0 +385208.68 4020.0 C57
2022-01-07 09:13:53 S 07 04 31.339 +36 17 14.03 V C57
2022-01-07 09:13:53 s 1 -51515.265 0 +385088.36 3950.0 C57
2022-01-07 09:23:53 S 07 04 29.669 +36 16 53.15 V C57
2022-01-07 09:23:53 s 1 -51868.199 0 +384967.12 3080.0 C57
2022-01-07 09:33:53 S 07 04 28.015 +36 16 31.12 V C57
2022-01-07 09:33:53 s 1 -52221.020 0 +384844.96 1410.0 C57
2022-01-07 09:43:53 S 07 04 26.333 +36 16 10.20 V C57
2022-01-07 09:43:53 s 1 -52573.728 0 +384721.87 8940.0 C57
2022-01-07 09:53:53 S 07 04 24.617 +36 15 46.80 V C57
2022-01-07 09:53:53 s 1 -52926.321 0 +384597.85 5660.0 C57
2022-01-07 10:03:53 S 07 04 22.982 +36 15 24.23 V C57
2022-01-07 10:03:53 s 1 -53278.799 0 +384472.91 1580.0 C57
2022-01-07 10:13:53 S 07 04 21.266 +36 15 02.81 V C57
2022-01-07 10:13:53 s 1 -53631.161 0 +384347.05 6670.0 C57
2022-01-07 10:23:53 S 07 04 19.589 +36 14 41.39 V C57
2022-01-07 10:23:53 s 1 -53983.405 0 +384220.27 950.0 C57
2022-01-07 10:33:53 S 07 04 17.942 +36 14 18.38 V C57
2022-01-07 10:33:53 s 1 -54335.531 0 +384092.56 4410.0 C57
2022-01-07 10:43:53 S 07 04 16.310 +36 13 57.32 V C57
2022-01-07 10:43:53 s 1 -54687.538 0 +383963.93 7030.0 C57
2022-01-07 10:53:53 S 07 04 14.731 +36 13 34.54 V C57
2022-01-07 10:53:53 s 1 -55039.425 0 +383834.37 8830.0 C57
2022-01-07 11:03:53 S 07 04 13.111 +36 13 10.81 V C57
2022-01-07 11:03:53 s 1 -55391.191 0 +383703.88 9790.0 C57
2022-01-07 11:13:53 S 07 04 11.467 +36 12 50.18 V C57
2022-01-07 11:13:53 s 1 -55742.835 0 +383572.48 9910.0 C57
2022-01-07 11:23:53 S 07 04 09.778 +36 12 28.08 V C57
2022-01-07 11:23:53 s 1 -56094.356 0 +383440.14 9190.0 C57
2022-01-07 11:33:53 S 07 04 08.160 +36 12 06.44 V C57
2022-01-07 11:33:53 s 1 -56445.754 0 +383306.89 7610.0 C57
2022-01-07 11:43:53 S 07 04 06.410 +36 11 43.94 V C57
2022-01-07 11:43:53 s 1 -56797.027 0 +383172.70 5190.0 C57
2022-01-07 11:53:53 S 07 04 04.771 +36 11 22.34 V C57
2022-01-07 11:53:53 s 1 -57148.174 0 +383037.59 1900.0 C57
2022-01-07 12:03:53 S 07 04 03.144 +36 11 00.13 V C57
2022-01-07 12:03:53 s 1 -57499.195 0 +382901.56 7760.0 C57
2022-01-07 12:13:53 S 07 04 01.478 +36 10 39.11 V C57
2022-01-07 12:13:53 s 1 -57850.088 0 +382764.60 2750.0 C57
2022-01-07 12:23:53 S 07 03 59.726 +36 10 15.67 V C57
2022-01-07 12:23:53 s 1 -58200.852 0 +382626.71 6870.0 C57
2022-01-07 12:33:53 S 07 03 58.315 +36 09 51.73 V C57
2022-01-07 12:33:53 s 1 -58551.488 0 +382487.90 120.0 C57
2022-01-07 12:43:53 S 07 03 56.484 +36 09 30.53 V C57
2022-01-07 12:43:53 s 1 -58901.993 0 +382348.16 2490.0 C57