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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09690052287274574 1.827e-08  
a 3.171071724612144 1.214e-08 au
q 2.863793216430248 5.9862e-08 au
i 10.05857963598032 1.0706e-06 deg
node 193.9261694837065 2.1471e-06 deg
peri 195.1953678474711 1.0039e-05 deg
M 315.5687111529122 7.6456e-06 deg
tp 2459455.062211462409
(2021-Aug-28.56221146)
4.3804e-05 TDB
period 2062.564433857822
5.65
1.1844e-05
3.243e-08
d
yr
n .174540001800892 1.0023e-09 deg/d
Q 3.478350232794041 1.3316e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3211  
   data-arc span      35261 days (96.54 yr)  
   first obs. used      1924-06-25  
   last obs. used      2021-01-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45564  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:48:58  

Additional Information
 Earth MOID = 1.86823 au 
 Jupiter MOID = 1.97562 au 
 T_jup = 3.171 
[ 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 10.03   n/a E2021B10 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. 2020-October); 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.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
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

[ hide close-approach data ]
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 02:44 00:01 Jupiter 1.97856374062774 1.97856354461541 1.97856393664019 3.61272120833751 3.49221350466853 2423510.614196410 1.46770404944708 95.8713395623208 7.8804085813652 -87.8938800357596 8357889.46935845 T 44 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:06 2021-Apr-12 11:50
2041-Jun-24 09:17 < 00:01 Jupiter 1.98177422728305 1.98177404838932 1.98177440617678 3.68718704371736 3.56938873992587 2466694.886832229 0.494855360235914 36.3065415182572 7.32085093825368 89.9217473367854 8663010.66571385 T 44 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:06 2021-Apr-12 11:50
2148-Dec-01 05:19 00:02 Jupiter 1.98458868590428 1.98458845334621 1.98458891846325 3.44187057157675 3.31555017622028 2505935.721526793 2.30225404819782 131.277787102349 7.81890170363898 -85.7142610752526 8088177.84165932 T 44 CATAB v2.0f-lin.ifort 2021-Apr-12 11:50:06 2021-Apr-12 11:50

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