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117 Lomia
Classification: Main-belt Asteroid          SPK-ID: 2000117
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 81 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02810460674319448 3.9491e-08  
a 2.991771170043969 1.1903e-08 au
q 2.907688617844256 1.1854e-07 au
i 14.90244172441877 4.8227e-06 deg
node 348.7897464827016 1.6594e-05 deg
peri 52.70654334460017 8.6121e-05 deg
M 279.1454569820278 8.4275e-05 deg
tp 2457825.014874682349
(2017-Mar-12.51487468)
0.00044327 JED
period 1890.127000676706
5.17
1.128e-05
3.088e-08
d
yr
n .1904633920742428 1.1367e-09 deg/d
Q 3.075853722243681 1.2238e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1482  
   data-arc span      44938 days (123.03 yr)  
   first obs. used      1892-10-10  
   last obs. used      2015-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51459  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 15:26:58  

Additional Information
 Earth MOID = 1.92379 au 
 Jupiter MOID = 2.04105 au 
 T_jup = 3.204 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.95 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
diameter diameter 148.71 km 6.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
rotation period rot_per 9.127 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Di Martino, M.; Dotto, E.; Celino, A.; Barucci, M.A.; Fulchignoni, M. (1995) Astron. Astrophys. Suppl. Ser. 112, 1-7.]
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2015) Astron. Astrophys., in press.arXiv:1510.07422]
geometric albedo albedo 0.0528   0.005 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
B-V BV .687 mag .017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=7; phase (min.=6.21, mean=12.03, max.=17.45) deg.
U-B UB .306 mag .033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=7; phase (min.=6.32, mean=12.86, max.=17.45) deg.
Tholen spectral type spec_T XC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

117 Lomia          Discovered 1871-Sep-12 by Borrelly, A. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A900 DA = A900 MC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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