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1023 Thomana (A924 MC)
Classification: Main-belt Asteroid          SPK-ID: 2001023
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0976148788379039 3.7726e-08  
a 3.174589781449642 1.48e-08 au
q 2.864702584573387 1.2073e-07 au
i 10.05097471990827 4.2539e-06 deg
node 194.0016182668511 1.9172e-05 deg
peri 194.6323572401501 2.6388e-05 deg
M 281.218478453612 1.9704e-05 deg
tp 2459452.617910056107
(2021-Aug-26.11791006)
0.00011428 TDB
period 2065.997767310966
5.66
1.4447e-05
3.955e-08
d
yr
n .1742499462952296 1.2185e-09 deg/d
Q 3.484476978325896 1.6245e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2749  
   data-arc span      35055 days (95.98 yr)  
   first obs. used      1924-06-25  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4888  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:24:49  

Additional Information
 Earth MOID = 1.87019 au 
 Jupiter MOID = 1.96859 au 
 T_jup = 3.170 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.0   n/a MPO492761 IRAS observations used: 11
diameter diameter 58.27 km 1.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
rotation period rot_per 17.56 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Brinsfield, J.W. (2010) Minor Planet Bull. 37, 50-53.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.0649   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
B-V BV 0.764   0.042 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.21, mean=7.39, max.=7.57) deg.
U-B UB 0.493   0.062 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.21, mean=7.39, max.=7.57) deg.
Tholen spectral type spec_T G   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

1023 Thomana (A924 MC)          Discovered 1924-Jun-25 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1923-Apr-01 02:50 00:02 Jupiter 1.97856414867359 1.97856379610111 1.97856450124607 3.61271892480059 3.49221116693662 2423510.617912017 1.64765910807221 114.304828847688 15.2586169325815 -87.83982911174 3837176.90306368 T 38 CATAB v2.0f-lin.ifort 2020-Jun-23 15:25:04 2020-Jun-23 15:25
2041-Jun-24 09:17 < 00:01 Jupiter 1.98177416749892 1.98177380133808 1.98177453365976 3.68718674674926 3.56938842888337 2466694.887042749 0.598841977003821 54.7702829229745 15.8939740935425 87.2562860290796 3848016.1257537 T 38 CATAB v2.0f-lin.ifort 2020-Jun-23 15:25:04 2020-Jun-23 15:25
2148-Dec-01 05:20 00:03 Jupiter 1.98458867118545 1.9845882917881 1.98458905058324 3.44186960557444 3.31554917174803 2505935.722030800 2.64541579297004 156.228953378763 15.4782142242891 -86.3876634951283 3581285.40812545 T 38 CATAB v2.0f-lin.ifort 2020-Jun-23 15:25:04 2020-Jun-23 15:25

Alternate Designations
 A924 MC = 1936 RG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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