6178 (1986 DA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5847926253 ± 7.18e-09
Semi-major axis (a)2.8137367896 AU ± 2.72e-09
Inclination (i)4.31447227° ± 1.53e-06
Long. of Asc. Node (Ω)64.47833583° ± 2.13e-05
Arg. of Perihelion (ω)127.46608007° ± 2.14e-05
Mean Anomaly (M)138.35738287° ± 1.70e-06
Mean Motion (n)0.2088272035°/day ± 3.03e-10
Perihelion dist (q)1.16828427 AU ± 2.02e-08
Aphelion dist (Q)4.45918931 AU ± 2.07e-08
Orbital Period4.71981747 yr ± 6.86e-09
Physical Parameters
H (abs. magnitude)15.71
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.248″
Uncertainty0
Orbit TypeAmor
MOID0.179159 AU
Observations Used1282
Radar Obs Used2
Oppositions7
Arc Total1977-2025
First Observation Used1977-07-17
Last Observation Used2025-09-25
Observations (1381)
Date Type RA Dec Mag Band Observatory
1986-08-16 05:00:35 A 16 36 27.12 -25 53 16.9 675
1986-08-16 05:07:23 A 16 36 27.62 -25 53 18.3 675
1994-10-05 13:42:04 C 04 31 39.90 +20 53 43.1 z 568
1994-10-05 14:39:45 C 04 31 39.54 +20 53 43.6 z 568
1994-10-11 10:14:01 c 04 30 29.40 +20 53 41.9 i 691
1994-10-11 11:56:00 C 04 30 28.08 +20 53 41.6 i 691
1994-10-11 12:04:01 C 04 30 27.98 +20 53 41.8 i 691
1994-11-11 14:26:16 C 04 09 50.88 +20 24 32.6 413
1994-11-11 14:29:53 C 04 09 50.69 +20 24 32.5 413
1994-11-27 20:21:00 C 03 51 48.72 +19 48 36.4 z 104
1994-11-27 20:26:30 C 03 51 48.58 +19 48 36.0 z 104
1994-12-02 21:09:44 C 03 45 57.30 +19 35 39.9 z 557
1994-12-02 21:20:14 C 03 45 56.70 +19 35 38.0 z 557
1994-12-06 23:45:21 C 03 41 15.31 +19 24 52.3 z 557
1994-12-06 23:54:38 C 03 41 14.96 +19 24 52.1 z 557
1994-12-07 00:16:26 C 03 41 13.99 +19 24 49.8 z 557
1994-12-20 13:29:42 C 03 27 17.68 +18 51 47.1 413
1994-12-20 13:33:47 C 03 27 17.43 +18 51 46.4 413
1994-12-21 12:55:04 C 03 26 25.42 +18 49 40.5 413
1994-12-21 13:05:03 C 03 26 25.11 +18 49 41.1 413
1994-12-28 04:56:46 c 03 21 04.93 +18 37 08.1 i 691
1994-12-28 05:31:50 c 03 21 03.86 +18 37 06.0 i 691
1994-12-28 06:07:12 c 03 21 02.75 +18 37 03.3 i 691
1996-06-09 17:30:49 C 22 40 20.28 -13 31 26.0 413
1996-06-09 17:37:39 C 22 40 20.37 -13 31 26.0 413
1996-06-09 17:47:17 C 22 40 20.45 -13 31 26.5 413
1996-06-21 18:44:26 C 22 41 37.66 -13 48 42.0 413
1996-06-21 18:50:23 C 22 41 37.66 -13 48 42.3 413
1996-08-02 10:29:02 C 22 19 20.52 -17 04 31.8 c 608
1996-08-02 11:32:55 C 22 19 17.94 -17 04 47.3 c 608
1996-08-09 11:21:40 C 22 12 28.56 -17 46 26.5 c 608
1996-08-09 12:25:06 C 22 12 25.85 -17 46 42.0 c 608
1999-12-01 06:17:59 C 05 58 12.07 +25 26 44.3 i 739
1999-12-01 06:51:00 C 05 58 10.78 +25 26 51.5 i 739
1999-12-07 07:08:20 C 05 51 35.31 +25 40 47.9 18.7 a 704
1999-12-07 07:29:20 C 05 51 34.26 +25 40 50.1 18.4 a 704
1999-12-07 07:50:18 C 05 51 33.15 +25 40 52.4 18.3 a 704
1999-12-07 08:11:25 C 05 51 32.07 +25 40 54.1 18.5 a 704
1999-12-13 22:14:19 C 05 43 02.72 +25 54 42.4 d 557
1999-12-13 22:47:51 C 05 43 00.73 +25 54 45.1 d 557
1999-12-13 23:39:13 C 05 42 57.71 +25 54 49.3 d 557
1999-12-13 23:59:20 C 05 42 56.56 +25 54 50.5 d 557
1999-12-30 20:29:31 C 05 18 01.00 +26 16 57.4 610
1999-12-30 20:37:01 C 05 18 00.43 +26 16 57.4 610
1999-12-30 20:45:00 C 05 17 59.85 +26 16 57.5 610
1999-12-30 20:53:00 C 05 17 59.28 +26 16 57.5 610
1999-12-30 21:01:01 C 05 17 58.71 +26 16 57.6 610
2000-01-03 05:26:14 C 05 13 02.96 +26 18 40.1 18.4 a 704
2000-01-03 05:47:30 C 05 13 01.64 +26 18 41.3 19.0 a 704
2000-01-03 06:08:48 C 05 13 00.40 +26 18 41.7 19.2 a 704
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1986-04-19 02:00:00 -20592.8 1 Hz 2380 -1 -1
1986-04-19.083333 -2059280 100 Hz 2380 251 251
1986-04-21 02:56:00 209263398 8 us 2380 -1 -1
1986-04-21.122222 20926339800 8000 us 2380 251 251
Station codes
-1 Arecibo (305-m, 1963–2020)