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
1996-10-30 19:12:46 C 23 08 38.79 +03 53 55.2 z 595
1996-10-30 19:20:47 C 23 08 39.75 +03 53 34.2 z 595
1996-11-01 14:05:53 C 23 13 53.32 +01 59 38.7 413
1996-11-01 14:09:29 C 23 13 53.74 +01 59 29.2 413
1996-11-02 14:16:32 C 23 16 55.04 +00 56 18.7 413
1996-11-02 14:19:33 C 23 16 55.40 +00 56 10.9 413
1996-11-17 02:57:06 C 00 03 38.58 -11 27 48.8 i 711
1996-11-17 03:03:55 C 00 03 39.48 -11 27 59.9 i 711
1996-11-18 04:45:33 C 00 07 12.71 -12 08 40.7 i 711
1996-11-18 04:52:19 C 00 07 13.60 -12 08 51.0 i 711
1996-12-05 04:02:36 C 01 03 15.31 -18 57 31.0 i 711
1996-12-05 04:15:58 C 01 03 17.07 -18 57 38.3 i 711
1996-12-06 03:47:19 C 01 06 26.25 -19 09 27.9 i 711
1996-12-06 12:50:30 C 01 07 38.28 -19 13 44.4 381
1996-12-06 12:54:06 C 01 07 38.80 -19 13 45.7 381
1999-05-17 09:12:19 C 16 34 16.69 -04 01 30.3 18.8 a 704
1999-05-17 09:29:42 C 16 34 15.50 -04 01 11.9 19.7 a 704
1999-05-17 10:04:46 C 16 34 13.04 -04 00 33.6 20.0 a 704
1999-05-17 10:22:10 C 16 34 12.16 -04 00 17.2 19.7 a 704
1999-06-12 05:30:36 C 15 54 41.78 +04 26 06.0 19.0 a 704
1999-06-12 05:48:19 C 15 54 40.71 +04 26 15.2 19.6 a 704
1999-06-12 06:05:59 C 15 54 39.73 +04 26 25.1 19.3 a 704
1999-06-12 06:23:42 C 15 54 38.75 +04 26 33.7 19.4 a 704
1999-06-12 06:41:23 C 15 54 37.76 +04 26 43.3 19.4 a 704
2002-03-30 05:21:59 C 11 16 51.91 -19 49 45.7 c 649
2002-03-30 05:25:52 C 11 16 51.84 -19 49 41.3 c 649
2002-03-30 05:29:45 C 11 16 51.61 -19 49 36.3 c 649
2002-03-30 05:33:40 C 11 16 51.52 -19 49 29.9 c 649
2002-04-05 06:05:18 C 11 12 17.84 -16 31 19.1 c 649
2002-04-05 06:09:44 C 11 12 17.67 -16 31 13.0 c 649
2002-04-05 06:14:09 C 11 12 17.55 -16 31 06.8 c 649
2002-04-09 06:11:51 C 11 10 14.63 -14 22 26.6 19.0 c 704
2002-04-09 06:29:20 C 11 10 14.30 -14 22 03.5 19.0 c 704
2002-04-09 06:46:49 C 11 10 13.87 -14 21 40.7 19.0 c 704
2002-04-09 07:04:18 C 11 10 13.54 -14 21 17.6 19.1 c 704
2002-04-10 04:22:27 C 11 09 53.45 -13 53 24.1 18.6 c 704
2002-04-10 04:39:12 C 11 09 53.13 -13 53 02.3 19.0 c 704
2002-04-10 04:55:55 C 11 09 52.82 -13 52 40.3 18.8 c 704
2002-04-10 05:12:48 C 11 09 52.51 -13 52 18.6 19.0 c 704
2002-04-10 05:30:02 C 11 09 52.19 -13 51 56.3 18.8 c 704
2002-04-12 04:31:34 C 11 09 15.64 -12 51 26.4 18.7 c 704
2002-04-12 04:51:50 C 11 09 15.28 -12 51 00.9 18.9 c 704
2002-04-12 05:11:50 C 11 09 15.05 -12 50 35.1 19.5 c 704
2002-04-12 05:31:45 C 11 09 14.72 -12 50 09.9 18.7 c 704
2004-06-21 23:55:02 C 21 28 45.90 +20 30 49.8 o 461
2004-06-21 23:58:24 C 21 28 46.03 +20 30 53.4 o 461
2004-06-22 00:01:45 C 21 28 46.11 +20 30 57.4 o 461
2004-07-23 00:03:22 C 21 35 32.74 +34 14 08.6 c 113
2004-07-23 00:05:26 C 21 35 32.70 +34 14 11.2 c 113
2004-08-19 20:41:12 C 21 12 00.87 +40 11 31.6 r A30