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 23:03:53 S 07 29 20.628 +41 08 55.82 V C57
2021-12-31 23:03:53 s 1 +170352.59 5 +67314.543 4550.0 C57
2021-12-31 23:13:53 S 07 29 18.929 +41 08 39.23 V C57
2021-12-31 23:13:53 s 1 +170581.41 8 +68216.633 3880.0 C57
2021-12-31 23:23:53 S 07 29 17.513 +41 08 23.96 V C57
2021-12-31 23:23:53 s 1 +170807.04 4 +69117.450 9760.0 C57
2021-12-31 23:33:53 S 07 29 16.006 +41 08 08.99 V C57
2021-12-31 23:33:53 s 1 +171029.49 4 +70016.989 2270.0 C57
2021-12-31 23:43:53 S 07 29 14.774 +41 07 55.16 V C57
2021-12-31 23:43:53 s 1 +171248.79 0 +70915.242 1530.0 C57
2021-12-31 23:53:53 S 07 29 13.142 +41 07 38.89 V C57
2021-12-31 23:53:53 s 1 +171464.95 3 +71812.205 7610.0 C57
2022-01-01 00:03:53 S 07 29 11.770 +41 07 20.93 V C57
2022-01-01 00:03:53 s 1 +171678.00 5 +72707.870 610.0 C57
2022-01-01 00:13:53 S 07 29 10.260 +41 07 05.88 V C57
2022-01-01 00:13:53 s 1 +171887.96 5 +73602.232 630.0 C57
2022-01-01 00:53:53 S 07 29 04.570 +41 06 04.61 V C57
2022-01-01 00:53:53 s 1 +172697.30 6 +77166.546 2640.0 C57
2022-01-01 01:03:53 S 07 29 03.036 +41 05 47.36 V C57
2022-01-01 01:03:53 s 1 +172892.11 7 +78054.314 9070.0 C57
2022-01-01 01:13:53 S 07 29 01.507 +41 05 32.06 V C57
2022-01-01 01:13:53 s 1 +173083.95 9 +78940.748 3040.0 C57
2022-01-01 01:23:53 S 07 29 00.156 +41 05 17.52 V C57
2022-01-01 01:23:53 s 1 +173272.85 1 +79825.843 4650.0 C57
2022-01-01 01:33:53 S 07 28 58.757 +41 05 02.04 V C57
2022-01-01 01:33:53 s 1 +173458.81 2 +80709.595 3980.0 C57
2022-01-01 01:43:53 S 07 28 57.226 +41 04 47.64 V C57
2022-01-01 01:43:53 s 1 +173641.86 3 +81591.999 1110.0 C57
2022-01-01 01:53:53 S 07 28 55.817 +41 04 29.93 V C57
2022-01-01 01:53:53 s 1 +173822.02 1 +82473.051 6130.0 C57
2022-01-01 02:03:53 S 07 28 54.350 +41 04 14.84 V C57
2022-01-01 02:03:53 s 1 +173999.30 6 +83352.747 9110.0 C57
2022-01-01 02:13:53 S 07 28 52.762 +41 03 57.60 V C57
2022-01-01 02:13:53 s 1 +174173.73 6 +84231.082 150.0 C57
2022-01-01 02:23:53 S 07 28 51.319 +41 03 43.70 V C57
2022-01-01 02:23:53 s 1 +174345.33 1 +85108.053 9320.0 C57
2022-01-01 02:33:53 S 07 28 50.045 +41 03 28.22 V C57
2022-01-01 02:33:53 s 1 +174514.10 9 +85983.656 6700.0 C57
2022-01-01 02:43:53 S 07 28 48.408 +41 03 12.24 V C57
2022-01-01 02:43:53 s 1 +174680.08 8 +86857.886 2380.0 C57
2022-01-01 02:53:53 S 07 28 47.021 +41 02 56.15 V C57
2022-01-01 02:53:53 s 1 +174843.28 6 +87730.742 6440.0 C57
2022-01-01 03:03:53 S 07 28 45.761 +41 02 40.52 V C57
2022-01-01 03:03:53 s 1 +175003.72 1 +88602.218 8940.0 C57
2022-01-01 03:13:53 S 07 28 44.090 +41 02 24.90 V C57
2022-01-01 03:13:53 s 1 +175161.41 2 +89472.312 9980.0 C57
2022-01-01 03:23:53 S 07 28 42.660 +41 02 09.13 V C57
2022-01-01 03:23:53 s 1 +175316.37 5 +90341.020 9620.0 C57
2022-01-01 03:33:53 S 07 28 41.222 +41 01 52.57 V C57
2022-01-01 03:33:53 s 1 +175468.62 9 +91208.339 7950.0 C57