2063 Bacchus (1977 HB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3494289066 ± 2.00e+00
Semi-major axis (a)1.0779986113 AU ± 3.00e+00
Inclination (i)9.43469494° ± 4.00e+00
Long. of Asc. Node (Ω)33.03636030° ± 5.00e+00
Arg. of Perihelion (ω)55.35066867° ± 6.00e+00
Mean Anomaly (M)234.78705685° ± 2.00e-05
Mean Motion (n)0.8806127601°/day ± 3.68e+00
Perihelion dist (q)0.70131474 AU ± 2.91e+00
Aphelion dist (Q)1.45468249 AU ± 4.59e+00
Orbital Period1.11925051 yr ± 4.67e+00
NGA Modelr2
A2-3.62707582e-06 AU/d²
Physical Parameters
H (abs. magnitude)17.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.501″
Uncertainty0
Orbit TypeApollo
MOID0.067153 AU
Observations Used1463
Radar Obs Used7
Gaia Obs Used54
Oppositions4
Arc Total1977-2025
First Observation Used1977-04-24
Last Observation Used2025-06-15
Observations (1537)
Date Type RA Dec Mag Band Observatory
2024-04-10 17:12:30 C 15 26 32.29 -05 59 54.3 u 323
2024-04-11 02:07:07 B 15 23 35.78 -06 17 03.9 q X33
2024-04-11 02:09:10 B 15 23 35.14 -06 17 07.6 q X33
2024-04-11 02:11:11 B 15 23 34.46 -06 17 11.5 q X33
2024-04-11 17:11:25 C 15 18 33.62 -06 44 10.8 u 323
2024-04-11 17:23:09 C 15 18 29.59 -06 44 31.5 u 323
2024-04-11 22:04:45 B 15 16 57.84 -06 54 20.8 X L99
2024-04-11 22:05:25 B 15 16 57.59 -06 54 22.2 X L99
2024-04-11 22:06:05 B 15 16 57.34 -06 54 23.4 X L99
2024-04-11 22:06:45 B 15 16 57.17 -06 54 24.9 X L99
2024-04-11 22:07:25 B 15 16 56.95 -06 54 25.1 X L99
2024-04-12 01:02:35 C 15 15 57.98 -06 59 37.4 M32
2024-04-12 01:06:31 C 15 15 56.66 -06 59 44.4 M32
2024-04-12 01:10:27 C 15 15 55.33 -06 59 51.4 M32
2024-04-12 01:14:23 C 15 15 54.00 -06 59 58.4 M32
2024-04-12 01:18:19 C 15 15 52.67 -07 00 05.4 M32
2024-04-12 10:30:54 C 15 12 53.327 -07 16 05.05 V 703
2024-04-12 10:34:10 C 15 12 52.225 -07 16 10.70 V 703
2024-04-12 10:37:25 C 15 12 51.124 -07 16 16.43 V 703
2024-04-12 10:40:41 C 15 12 50.022 -07 16 21.97 V 703
2024-04-12 21:51:16 B 15 09 19.162 -07 35 44.88 V 160
2024-04-12 21:56:09 B 15 09 17.568 -07 35 53.48 V 160
2024-04-12 22:01:01 B 15 09 15.965 -07 36 02.12 V 160
2024-04-12 22:41:13 C 15 09 02.43 -07 37 15.2 Y 557
2024-04-12 22:44:02 B 15 09 01.743 -07 37 12.48 V L92
2024-04-12 22:53:13 B 15 08 58.729 -07 37 27.89 V L92
2024-04-12 23:03:24 B 15 08 55.331 -07 37 44.67 V L92
2024-04-12 23:10:21 C 15 08 52.86 -07 38 05.1 Y 557
2024-04-12 23:13:36 B 15 08 51.948 -07 38 02.89 V L92
2024-04-12 23:40:43 C 15 08 42.88 -07 38 56.9 Y 557
2024-04-13 00:09:53 C 15 08 33.30 -07 39 46.5 Y 557
2024-04-13 00:41:29 C 15 08 22.93 -07 40 40.0 Y 557
2024-04-13 01:10:37 C 15 08 13.34 -07 41 29.3 Y 557
2024-04-13 01:41:00 C 15 08 03.39 -07 42 20.3 Y 557
2024-04-13 02:11:23 C 15 07 53.43 -07 43 11.4 Y 557
2024-04-13 02:40:31 C 15 07 43.89 -07 44 00.3 Y 557
2024-04-13 18:41:55 C 15 02 43.74 -08 09 17.0 u 323
2024-04-13 18:53:27 C 15 02 40.11 -08 09 35.4 u 323
2024-04-13 22:41:24 C 15 01 32.00 -08 17 01.6 Y 557
2024-04-13 23:13:52 C 15 01 21.64 -08 17 54.3 Y 557
2024-04-13 23:41:09 C 15 01 12.96 -08 18 38.4 Y 557
2024-04-14 00:10:28 C 15 01 03.62 -08 19 25.6 Y 557
2024-04-14 00:40:52 C 15 00 53.92 -08 20 14.5 Y 557
2024-04-14 01:11:00 C 15 00 44.32 -08 21 02.8 Y 557
2024-04-14 01:43:30 C 15 00 33.98 -08 21 54.7 Y 557
2024-04-14 02:06:32 C 15 00 26.64 -08 22 31.5 Y 557
2024-04-14 10:25:45 C 14 57 54.202 -08 35 30.84 V 703
2024-04-14 10:29:01 C 14 57 53.168 -08 35 35.95 V 703
2024-04-14 10:32:17 C 14 57 52.139 -08 35 41.03 V 703
2024-04-14 10:35:33 C 14 57 51.109 -08 35 46.03 V 703
Radar Observations (19)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1996-03-22 18:00:00 384093.223 2.3 Hz 8510 -14 -14
1996-03-22 20:10:00 87190665 15 us 8510 -14 -14
1996-03-22 22:50:00 86769151 2 us 8510 -14 -14
1996-03-22 22:50:00 371573.7 2 Hz 8510 -14 -14
1996-03-22.750000 38409322 200 Hz 8510 253 253
1996-03-22.840278 8719066500 15000 us 8510 253 253
1996-03-22.951389 8676915100 2000 us 8510 253 253
1996-03-24 17:50:00 324347 2 Hz 8510 -14 -14
1996-03-24 22:10:00 79673366 1 us 8510 -14 -14
1996-03-24 23:00:00 79562896 10 us 8510 -14 -14
1996-03-24.743056 32434700 200 Hz 8510 253 253
1996-03-24.923611 7967336600 1000 us 8510 253 253
1996-03-24.958333 7956289600 10000 us 8510 253 253
1996-03-29 19:30:00 96363 2 Hz 8510 -14 -14
1996-03-29.812500 9636300 200 Hz 8510 253 253
2012-09-13 11:31:00 -76858.4372 0.3 Hz 2380 -1 -1
2012-09-13 12:27:00 248520536.79 4 us 2380 -1 -1
2012-09-14 12:21:00 251520636.56 4 us 2380 -1 -1
2015-04-18 23:59:00 217913625.88 4 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)