4947 Ninkasi (1988 TJ1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1684400316 ± 2.00e+00
Semi-major axis (a)1.3701127590 AU ± 3.00e+00
Inclination (i)15.65180501° ± 4.00e+00
Long. of Asc. Node (Ω)215.42213933° ± 5.00e+00
Arg. of Perihelion (ω)192.96274282° ± 6.00e+00
Mean Anomaly (M)30.35999586° ± 8.59e-06
Mean Motion (n)0.6145791326°/day ± 2.02e+00
Perihelion dist (q)1.13933092 AU ± 3.71e+00
Aphelion dist (Q)1.60089460 AU ± 4.45e+00
Orbital Period1.60374186 yr ± 5.27e+00
NGA Modelr2
A2-1.97295877e-06 AU/d²
Physical Parameters
H (abs. magnitude)18.07
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.365″
Uncertainty0
Orbit TypeAmor
MOID0.148389 AU
Observations Used954
Oppositions18
Arc Total1978-2026
First Observation Used1978-02-17
Last Observation Used2026-03-26
Observations (999)
Date Type RA Dec Mag Band Observatory
2012-10-29 01:57:10 C 21 23 53.14 +00 08 42.4 u H21
2012-11-03 02:37:35 C 21 40 04.22 -02 24 58.7 r 703
2012-11-03 02:47:23 C 21 40 05.52 -02 25 10.0 r 703
2012-11-03 02:57:08 C 21 40 06.85 -02 25 22.7 r 703
2012-11-03 03:06:57 C 21 40 08.11 -02 25 34.1 r 703
2012-11-12 02:22:58 C 22 11 01.86 -06 24 12.1 r G96
2012-11-12 02:33:26 C 22 11 03.33 -06 24 23.0 r G96
2012-11-12 02:44:01 C 22 11 04.84 -06 24 32.9 r G96
2012-11-12 02:54:23 C 22 11 06.32 -06 24 43.6 r G96
2012-11-13 01:59:33 C 22 14 32.91 -06 47 16.5 17.9 c 704
2012-11-13 02:21:31 C 22 14 36.11 -06 47 37.8 18.1 c 704
2012-11-13 02:43:14 C 22 14 39.22 -06 47 58.1 18.3 c 704
2012-11-13 03:05:54 C 22 14 42.47 -06 48 19.9 18.2 c 704
2012-11-13 03:27:12 C 22 14 45.56 -06 48 40.4 18.7 c 704
2012-11-17 01:37:24 C 22 29 00.20 -08 13 59.7 r 703
2012-11-17 01:44:16 C 22 29 01.17 -08 14 05.5 r 703
2012-11-17 01:51:04 C 22 29 02.18 -08 14 11.5 r 703
2012-11-17 01:57:54 C 22 29 03.22 -08 14 17.4 r 703
2014-12-30 15:28:45 C 13 40 41.523 -21 43 07.75 L F51
2014-12-30 15:33:29 C 13 40 41.989 -21 43 09.88 L F51
2014-12-30 15:38:13 C 13 40 42.471 -21 43 11.87 L F51
2014-12-30 15:42:58 C 13 40 42.928 -21 43 13.92 L F51
2015-04-19 08:16:15 C 16 12 12.98 -16 10 58.5 R G45
2015-04-19 08:24:18 C 16 12 12.74 -16 10 50.9 R G45
2015-04-19 08:33:37 C 16 12 12.41 -16 10 42.9 R G45
2015-04-19 08:42:35 C 16 12 12.14 -16 10 35.6 R G45
2015-04-21 08:15:17 C 16 10 41.87 -15 26 59.7 R G45
2015-04-21 08:24:32 C 16 10 41.52 -15 26 51.2 R G45
2015-04-21 08:33:37 C 16 10 41.18 -15 26 43.1 R G45
2015-04-21 08:42:59 C 16 10 40.83 -15 26 34.3 R G45
2015-04-21 17:10:14 C 16 10 23.55 -15 18 38.3 q D29
2015-04-21 17:33:06 C 16 10 22.74 -15 18 18.0 q D29
2015-04-21 17:55:57 C 16 10 21.85 -15 17 56.4 q D29
2015-05-09 09:23:23 C 15 48 46.53 -08 00 08.2 q 703
2015-05-09 09:30:36 C 15 48 46.04 -07 59 58.8 q 703
2015-05-09 09:37:49 C 15 48 45.50 -07 59 52.2 q 703
2015-05-09 09:45:03 C 15 48 45.09 -07 59 44.0 q 703
2015-05-09 17:32:58 C 15 48 15.66 -07 51 21.2 q D29
2015-05-09 17:54:34 C 15 48 14.26 -07 50 59.2 q D29
2015-05-12 15:38:45 C 15 43 44.95 -06 36 30.2 q D29
2015-05-12 16:00:20 C 15 43 43.45 -06 36 07.7 q D29
2015-05-12 16:21:55 C 15 43 41.83 -06 35 44.8 q D29
2015-05-14 11:26:08 C 15 40 52.183 -05 50 25.21 L F52
2015-05-14 11:47:18 C 15 40 50.705 -05 50 03.21 L F52
2015-05-14 12:08:24 C 15 40 49.232 -05 49 41.12 L F52
2015-05-14 12:29:29 C 15 40 47.768 -05 49 19.07 L F52
2015-05-15 23:48:15 C 15 38 28.56 -05 12 49.1 18.5 u J43
2015-05-16 00:03:16 C 15 38 27.49 -05 12 33.9 18.7 u J43
2015-05-16 00:18:06 C 15 38 26.45 -05 12 18.7 18.6 u J43
2015-05-16 00:32:56 C 15 38 25.40 -05 12 03.4 18.7 u J43