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
2022-01-08 01:13:53 s 1 -84747.723 0 +369213.15 7080.0 C57
2022-01-08 01:23:53 S 07 01 50.899 +35 41 10.64 V C57
2022-01-08 01:23:53 s 1 -85085.463 0 +369002.39 9750.0 C57
2022-01-08 01:33:53 S 07 01 49.222 +35 40 47.71 V C57
2022-01-08 01:33:53 s 1 -85422.996 0 +368790.69 1200.0 C57
2022-01-08 01:43:53 S 07 01 47.587 +35 40 24.56 V C57
2022-01-08 01:43:53 s 1 -85760.321 0 +368578.05 1410.0 C57
2022-01-08 01:53:53 S 07 01 45.958 +35 40 02.64 V C57
2022-01-08 01:53:53 s 1 -86097.436 0 +368364.46 390.0 C57
2022-01-08 02:03:53 S 07 01 44.222 +35 39 39.24 V C57
2022-01-08 02:03:53 s 1 -86434.341 0 +368149.93 8130.0 C57
2022-01-08 02:13:53 S 07 01 42.554 +35 39 15.41 V C57
2022-01-08 02:13:53 s 1 -86771.034 0 +367934.45 4620.0 C57
2022-01-08 02:23:53 S 07 01 41.050 +35 38 55.39 V C57
2022-01-08 02:23:53 s 1 -87107.514 0 +367718.03 9850.0 C57
2022-01-08 02:33:53 S 07 01 39.403 +35 38 33.07 V C57
2022-01-08 02:33:53 s 1 -87443.781 0 +367500.66 3830.0 C57
2022-01-08 02:43:53 S 07 01 37.759 +35 38 08.77 V C57
2022-01-08 02:43:53 s 1 -87779.833 0 +367282.34 6550.0 C57
2022-01-08 02:53:53 S 07 01 35.983 +35 37 46.56 V C57
2022-01-08 02:53:53 s 1 -88115.668 0 +367063.08 8010.0 C57
2022-01-08 03:03:53 S 07 01 34.385 +35 37 24.13 V C57
2022-01-08 03:03:53 s 1 -88451.287 0 +366842.87 8190.0 C57
2022-01-08 03:13:53 S 07 01 32.714 +35 37 01.67 V C57
2022-01-08 03:13:53 s 1 -88786.688 0 +366621.72 7100.0 C57
2022-01-08 03:23:53 S 07 01 31.121 +35 36 38.74 V C57
2022-01-08 03:23:53 s 1 -89121.869 0 +366399.62 4720.0 C57
2022-01-08 03:33:53 S 07 01 29.448 +35 36 15.73 V C57
2022-01-08 03:33:53 s 1 -89456.831 0 +366176.56 1060.0 C57
2022-01-08 03:43:53 S 07 01 27.806 +35 35 52.22 V C57
2022-01-08 03:43:53 s 1 -89791.570 0 +365952.57 6110.0 C57
2022-01-08 03:53:53 S 07 01 26.153 +35 35 30.66 V C57
2022-01-08 03:53:53 s 1 -90126.088 0 +365727.62 9860.0 C57
2022-01-08 04:03:53 S 07 01 24.466 +35 35 07.51 V C57
2022-01-08 04:03:53 s 1 -90460.381 0 +365501.72 2310.0 C57
2022-01-08 04:13:53 S 07 01 22.855 +35 34 45.05 V C57
2022-01-08 04:13:53 s 1 -90794.450 0 +365274.88 3460.0 C57
2022-01-08 04:23:53 S 07 01 21.235 +35 34 21.72 V C57
2022-01-08 04:23:53 s 1 -91128.293 0 +365047.08 3290.0 C57
2022-01-08 04:33:53 S 07 01 19.598 +35 33 59.65 V C57
2022-01-08 04:33:53 s 1 -91461.909 0 +364818.34 1810.0 C57
2022-01-08 04:43:53 S 07 01 17.921 +35 33 36.90 V C57
2022-01-08 04:43:53 s 1 -91795.297 0 +364588.64 9000.0 C57
2022-01-08 04:53:53 S 07 01 16.291 +35 33 14.58 V C57
2022-01-08 04:53:53 s 1 -92128.456 0 +364358.00 4870.0 C57
2022-01-08 05:03:53 S 07 01 14.722 +35 32 51.11 V C57
2022-01-08 05:03:53 s 1 -92461.385 0 +364126.41 9410.0 C57
2022-01-08 05:13:53 S 07 01 13.010 +35 32 28.18 V C57
2022-01-08 05:13:53 s 1 -92794.082 0 +363893.86 2620.0 C57
2022-01-08 05:23:53 S 07 01 11.278 +35 32 04.92 V C57