2015 WF9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7023648099 ± 9.37e-08
Semi-major axis (a)1.7896266072 AU ± 4.00e-08
Inclination (i)52.76855139° ± 2.17e-05
Long. of Asc. Node (Ω)245.94382772° ± 7.89e-06
Arg. of Perihelion (ω)328.48710048° ± 1.98e-05
Mean Anomaly (M)347.62279427° ± 2.77e-05
Mean Motion (n)0.4116884038°/day ± 1.38e-08
Perihelion dist (q)0.53265586 AU ± 1.68e-07
Aphelion dist (Q)3.04659736 AU ± 1.81e-07
Orbital Period2.39410747 yr ± 8.02e-08
Physical Parameters
H (abs. magnitude)18.81
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.304″
Uncertainty0
Orbit TypeApollo
MOID0.434357 AU
Observations Used89
Oppositions3
Arc Total2015-2021
First Observation Used2015-11-22
Last Observation Used2021-01-10
Observations (89)
Date Type RA Dec Mag Band Observatory
2015-12-16 05:47:46 C 03 38 26.88 +13 58 57.8 q G96
2015-12-16 05:54:22 C 03 38 26.33 +13 58 50.8 q G96
2015-12-16 06:00:57 C 03 38 25.72 +13 58 44.8 q G96
2015-12-16 06:07:34 C 03 38 25.13 +13 58 38.0 q G96
2016-01-09 01:48:34 C 03 00 03.82 +05 33 41.0 u 807
2016-01-09 01:57:55 C 03 00 03.42 +05 33 34.1 u 807
2016-01-09 02:07:41 C 03 00 02.98 +05 33 27.0 u 807
2016-01-16 01:15:10 C 02 54 06.63 +03 44 28.5 u 807
2016-01-16 01:28:46 C 02 54 06.26 +03 44 21.0 u 807
2016-01-16 01:41:43 C 02 54 05.85 +03 44 13.4 u 807
2016-02-02 00:15:36 C 02 48 51.53 +00 29 55.8 u H21
2016-02-02 00:28:44 C 02 48 51.51 +00 29 50.9 u H21
2016-02-02 00:46:16 C 02 48 51.51 +00 29 44.8 u H21
2016-03-01 03:01:34 C 03 02 25.19 -02 29 45.9 o 291
2016-03-01 03:14:17 C 03 02 25.68 -02 29 47.8 o 291
2016-03-01 03:27:01 C 03 02 26.11 -02 29 50.4 o 291
2016-07-28 05:59:37 C 16 14 54.907 +85 20 21.50 t 568
2016-07-28 06:02:09 C 16 14 55.514 +85 20 19.04 t 568
2016-07-28 06:04:35 C 16 14 56.171 +85 20 16.66 t 568
2016-07-29 05:53:06 C 16 20 47.091 +84 57 30.68 t 568
2016-07-29 05:56:50 C 16 20 47.737 +84 57 27.25 t 568
2016-09-13 01:40:36 C 18 23 17.54 +67 34 30.8 u H21
2016-09-13 02:15:56 C 18 23 20.79 +67 33 55.9 u H21
2016-09-13 02:54:34 C 18 23 24.41 +67 33 17.3 u H21
2016-10-06 00:59:22 C 19 16 39.66 +58 18 19.4 u H21
2016-10-06 01:34:30 C 19 16 42.86 +58 17 43.6 u H21
2016-10-06 02:04:38 C 19 16 45.68 +58 17 13.0 u H21
2016-10-07 00:31:03 C 19 18 55.60 +57 54 40.7 u H21
2016-10-07 00:48:37 C 19 18 57.24 +57 54 22.8 u H21
2016-10-07 01:47:26 C 19 19 02.72 +57 53 23.9 u H21
2020-11-12 11:51:01 C 06 45 59.93 +01 19 46.7 o 291
2020-11-12 11:53:24 C 06 45 59.86 +01 19 42.2 o 291
2020-11-12 11:55:47 C 06 45 59.83 +01 19 38.2 o 291
2020-12-15 12:36:56 C 05 40 56.18 -34 00 11.2 V 474
2020-12-15 12:39:30 C 05 40 55.72 -34 00 20.3 V 474
2020-12-15 12:42:04 C 05 40 55.26 -34 00 28.9 V 474
2021-01-10 10:20:49 C 02 59 37.14 -56 57 11.5 V 474
2021-01-10 10:24:13 C 02 59 36.06 -56 57 14.5 V 474
2021-01-10 10:27:41 C 02 59 34.99 -56 57 17.6 V 474