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
2022-01-09 16:33:53 S 06 55 27.598 +34 10 01.96 V C57
2022-01-09 16:33:53 s 1 -156017.38 9 +292455.32 5450.0 C57
2022-01-09 16:43:53 S 06 55 25.829 +34 09 36.65 V C57
2022-01-09 16:43:53 s 1 -156269.61 1 +292010.08 2450.0 C57
2022-01-09 16:53:53 S 06 55 24.173 +34 09 12.78 V C57
2022-01-09 16:53:53 s 1 -156521.27 3 +291563.78 6610.0 C57
2022-01-09 17:03:53 S 06 55 22.692 +34 08 49.52 V C57
2022-01-09 17:03:53 s 1 -156772.37 2 +291116.42 7940.0 C57
2022-01-09 17:13:53 S 06 55 21.118 +34 08 26.30 V C57
2022-01-09 17:13:53 s 1 -157022.90 6 +290668.00 6420.0 C57
2022-01-09 17:23:53 S 06 55 19.438 +34 08 00.96 V C57
2022-01-09 17:23:53 s 1 -157272.87 3 +290218.52 2040.0 C57
2022-01-09 17:33:53 S 06 55 17.909 +34 07 37.34 V C57
2022-01-09 17:33:53 s 1 -157522.27 0 +289767.98 4790.0 C57
2022-01-09 17:43:53 S 06 55 16.253 +34 07 14.05 V C57
2022-01-09 17:43:53 s 1 -157771.09 6 +289316.37 4660.0 C57
2022-01-09 17:53:53 S 06 55 14.645 +34 06 50.26 V C57
2022-01-09 17:53:53 s 1 -158019.34 9 +288863.70 1650.0 C57
2022-01-09 18:03:53 S 06 55 13.068 +34 06 25.67 V C57
2022-01-09 18:03:53 s 1 -158267.02 5 +288409.97 5730.0 C57
2022-01-09 18:13:53 S 06 55 11.438 +34 06 02.09 V C57
2022-01-09 18:13:53 s 1 -158514.12 3 +287955.17 6910.0 C57
2022-01-09 18:23:53 S 06 55 09.917 +34 05 39.12 V C57
2022-01-09 18:23:53 s 1 -158760.64 1 +287499.31 5170.0 C57
2022-01-09 18:33:53 S 06 55 08.254 +34 05 14.24 V C57
2022-01-09 18:33:53 s 1 -159006.57 7 +287042.38 510.0 C57
2022-01-09 18:43:53 S 06 55 06.605 +34 04 50.66 V C57
2022-01-09 18:43:53 s 1 -159251.92 7 +286584.39 2900.0 C57
2022-01-09 18:53:53 S 06 55 05.040 +34 04 26.33 V C57
2022-01-09 18:53:53 s 1 -159496.69 0 +286125.33 2350.0 C57
2022-01-09 19:03:53 S 06 55 03.420 +34 04 02.03 V C57
2022-01-09 19:03:53 s 1 -159740.86 4 +285665.20 8830.0 C57
2022-01-09 19:13:53 S 06 55 01.860 +34 03 38.30 V C57
2022-01-09 19:13:53 s 1 -159984.44 6 +285204.00 2350.0 C57
2022-01-09 19:33:53 S 06 54 58.642 +34 02 49.85 V C57
2022-01-09 19:33:53 s 1 -160469.82 6 +284278.39 430.0 C57
2022-01-09 19:43:53 S 06 54 57.007 +34 02 25.91 V C57
2022-01-09 19:43:53 s 1 -160711.62 0 +283813.98 4980.0 C57
2022-01-09 19:53:53 S 06 54 55.320 +34 02 01.36 V C57
2022-01-09 19:53:53 s 1 -160952.81 2 +283348.51 6520.0 C57
2022-01-09 20:03:53 S 06 54 53.844 +34 01 38.14 V C57
2022-01-09 20:03:53 s 1 -161193.40 1 +282881.95 5030.0 C57
2022-01-09 20:13:53 S 06 54 52.152 +34 01 14.38 V C57
2022-01-09 20:13:53 s 1 -161433.38 4 +282414.33 510.0 C57
2022-01-09 20:23:53 S 06 54 50.520 +34 00 50.22 V C57
2022-01-09 20:23:53 s 1 -161672.76 0 +281945.63 2950.0 C57
2022-01-09 20:33:53 S 06 54 49.054 +34 00 26.06 V C57
2022-01-09 20:33:53 s 1 -161911.52 5 +281475.86 2340.0 C57
2022-01-09 20:43:53 S 06 54 47.316 +34 00 02.77 V C57
2022-01-09 20:43:53 s 1 -162149.67 8 +281005.01 8660.0 C57