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
2022-01-01 17:53:53 S 07 26 32.630 +40 38 49.70 V C57
2022-01-01 17:53:53 s 1 +180041.94 7 +160434.30 3220.0 C57
2022-01-01 18:03:53 S 07 26 31.138 +40 38 33.83 V C57
2022-01-01 18:03:53 s 1 +180011.79 0 +161176.42 8390.0 C57
2022-01-01 18:13:53 S 07 26 29.731 +40 38 16.94 V C57
2022-01-01 18:13:53 s 1 +179980.02 0 +161917.11 6990.0 C57
2022-01-01 18:23:53 S 07 26 28.078 +40 37 59.66 V C57
2022-01-01 18:23:53 s 1 +179946.64 6 +162656.37 9060.0 C57
2022-01-01 18:33:53 S 07 26 26.551 +40 37 43.14 V C57
2022-01-01 18:33:53 s 1 +179911.67 7 +163394.19 4620.0 C57
2022-01-01 18:43:53 S 07 26 25.090 +40 37 29.24 V C57
2022-01-01 18:43:53 s 1 +179875.12 1 +164130.59 3730.0 C57
2022-01-01 18:53:53 S 07 26 23.599 +40 37 11.57 V C57
2022-01-01 18:53:53 s 1 +179836.98 6 +164865.56 6410.0 C57
2022-01-01 19:03:53 S 07 26 22.078 +40 36 54.36 V C57
2022-01-01 19:03:53 s 1 +179797.28 1 +165599.10 2710.0 C57
2022-01-01 19:13:53 S 07 26 20.501 +40 36 38.05 V C57
2022-01-01 19:13:53 s 1 +179756.01 5 +166331.22 2650.0 C57
2022-01-01 19:23:53 S 07 26 18.840 +40 36 21.49 V C57
2022-01-01 19:23:53 s 1 +179713.19 5 +167061.91 6270.0 C57
2022-01-01 19:33:53 S 07 26 17.446 +40 36 04.46 V C57
2022-01-01 19:33:53 s 1 +179668.83 0 +167791.18 3600.0 C57
2022-01-01 19:43:53 S 07 26 15.821 +40 35 47.83 V C57
2022-01-01 19:43:53 s 1 +179622.92 8 +168519.03 4700.0 C57
2022-01-01 19:53:53 S 07 26 14.350 +40 35 31.92 V C57
2022-01-01 19:53:53 s 1 +179575.49 7 +169245.45 9570.0 C57
2022-01-01 20:03:53 S 07 26 12.850 +40 35 15.29 V C57
2022-01-01 20:03:53 s 1 +179526.54 5 +169970.45 8270.0 C57
2022-01-01 20:13:53 S 07 26 11.287 +40 34 58.76 V C57
2022-01-01 20:13:53 s 1 +179476.08 0 +170694.04 830.0 C57
2022-01-01 20:23:53 S 07 26 09.754 +40 34 43.64 V C57
2022-01-01 20:23:53 s 1 +179424.11 1 +171416.20 7270.0 C57
2022-01-01 20:33:53 S 07 26 08.292 +40 34 25.57 V C57
2022-01-01 20:33:53 s 1 +179370.64 4 +172136.95 7640.0 C57
2022-01-01 20:43:53 S 07 26 06.638 +40 34 09.77 V C57
2022-01-01 20:43:53 s 1 +179315.68 8 +172856.28 1960.0 C57
2022-01-01 20:53:53 S 07 26 05.206 +40 33 52.45 V C57
2022-01-01 20:53:53 s 1 +179259.25 1 +173574.19 270.0 C57
2022-01-01 21:03:53 S 07 26 03.694 +40 33 35.93 V C57
2022-01-01 21:03:53 s 1 +179201.34 0 +174290.70 2600.0 C57
2022-01-01 21:13:53 S 07 26 02.150 +40 33 20.23 V C57
2022-01-01 21:13:53 s 1 +179141.96 3 +175005.79 8990.0 C57
2022-01-01 21:23:53 S 07 26 00.569 +40 33 04.18 V C57
2022-01-01 21:23:53 s 1 +179081.12 7 +175719.46 9470.0 C57
2022-01-01 21:33:53 S 07 25 58.970 +40 32 46.97 V C57
2022-01-01 21:33:53 s 1 +179018.84 1 +176431.73 4070.0 C57
2022-01-01 21:43:53 S 07 25 57.502 +40 32 30.48 V C57
2022-01-01 21:43:53 s 1 +178955.11 1 +177142.59 2820.0 C57
2022-01-01 21:53:53 S 07 25 56.035 +40 32 13.38 V C57
2022-01-01 21:53:53 s 1 +178889.94 5 +177852.04 5750.0 C57