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 12:53:53 S 07 03 54.814 +36 09 08.86 V C57
2022-01-07 12:53:53 s 1 -59252.367 0 +382207.50 3970.0 C57
2022-01-07 13:03:53 S 07 03 53.172 +36 08 46.75 V C57
2022-01-07 13:03:53 s 1 -59602.608 0 +382065.91 4570.0 C57
2022-01-07 13:13:53 S 07 03 51.595 +36 08 23.93 V C57
2022-01-07 13:13:53 s 1 -59952.717 0 +381923.39 4280.0 C57
2022-01-07 13:23:53 S 07 03 49.762 +36 08 01.36 V C57
2022-01-07 13:23:53 s 1 -60302.691 0 +381779.94 3100.0 C57
2022-01-07 13:33:53 S 07 03 48.197 +36 07 40.30 V C57
2022-01-07 13:33:53 s 1 -60652.530 0 +381635.57 1010.0 C57
2022-01-07 13:43:53 S 07 03 46.594 +36 07 18.37 V C57
2022-01-07 13:43:53 s 1 -61002.234 0 +381490.27 8020.0 C57
2022-01-07 13:53:53 S 07 03 44.861 +36 06 55.69 V C57
2022-01-07 13:53:53 s 1 -61351.800 0 +381344.04 4120.0 C57
2022-01-07 14:03:53 S 07 03 43.174 +36 06 33.19 V C57
2022-01-07 14:03:53 s 1 -61701.229 0 +381196.89 9310.0 C57
2022-01-07 14:13:53 S 07 03 41.642 +36 06 12.35 V C57
2022-01-07 14:13:53 s 1 -62050.518 0 +381048.81 3590.0 C57
2022-01-07 14:23:53 S 07 03 39.934 +36 05 49.85 V C57
2022-01-07 14:23:53 s 1 -62399.668 0 +380899.79 6940.0 C57
2022-01-07 14:43:53 S 07 03 36.571 +36 05 03.66 V C57
2022-01-07 14:43:53 s 1 -63097.545 0 +380598.99 860.0 C57
2022-01-07 14:53:53 S 07 03 35.263 +36 04 39.04 V C57
2022-01-07 14:53:53 s 1 -63446.270 0 +380447.19 1430.0 C57
2022-01-07 15:03:53 S 07 03 33.360 +36 04 20.17 V C57
2022-01-07 15:03:53 s 1 -63794.851 0 +380294.47 1050.0 C57
2022-01-07 15:13:53 S 07 03 31.654 +36 03 56.70 V C57
2022-01-07 15:13:53 s 1 -64143.288 0 +380140.81 9730.0 C57
2022-01-07 15:23:53 S 07 03 29.993 +36 03 36.22 V C57
2022-01-07 15:23:53 s 1 -64491.579 0 +379986.23 7470.0 C57
2022-01-07 15:33:53 S 07 03 28.406 +36 03 12.78 V C57
2022-01-07 15:33:53 s 1 -64839.724 0 +379830.71 4250.0 C57
2022-01-07 15:43:53 S 07 03 26.686 +36 02 50.68 V C57
2022-01-07 15:43:53 s 1 -65187.722 0 +379674.27 80.0 C57
2022-01-07 15:53:53 S 07 03 25.109 +36 02 28.46 V C57
2022-01-07 15:53:53 s 1 -65535.570 0 +379516.90 4950.0 C57
2022-01-07 16:13:53 S 07 03 21.761 +36 01 44.90 V C57
2022-01-07 16:13:53 s 1 -66230.819 0 +379199.36 1790.0 C57
2022-01-07 16:23:53 S 07 03 20.035 +36 01 21.90 V C57
2022-01-07 16:23:53 s 1 -66578.217 0 +379039.20 3750.0 C57
2022-01-07 16:33:53 S 07 03 18.415 +36 01 00.62 V C57
2022-01-07 16:33:53 s 1 -66925.463 0 +378878.11 4740.0 C57
2022-01-07 16:43:53 S 07 03 16.716 +36 00 38.30 V C57
2022-01-07 16:43:53 s 1 -67272.555 0 +378716.08 4740.0 C57
2022-01-07 16:53:53 S 07 03 15.106 +36 00 15.70 V C57
2022-01-07 16:53:53 s 1 -67619.493 0 +378553.13 3760.0 C57
2022-01-07 17:03:53 S 07 03 13.452 +35 59 54.06 V C57
2022-01-07 17:03:53 s 1 -67966.276 0 +378389.24 1780.0 C57
2022-01-07 17:13:53 S 07 03 11.760 +35 59 30.95 V C57
2022-01-07 17:13:53 s 1 -68312.902 0 +378224.42 8810.0 C57