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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 67 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02854611895737215 5.0253e-08  
a 2.990302749160772 1.2886e-08 AU
q 2.904941211164672 1.4967e-07 AU
i 14.90285876465135 6.4525e-06 deg
node 348.8005611576449 2.0427e-05 deg
peri 53.23080027536393 0.00012019 deg
M 164.3010622692501 0.00011741 deg
tp 2455938.496483344300
(2012-Jan-11.99648334)
0.00061425 JED
period 1888.735603471082
5.17
1.2208e-05
3.342e-08
d
yr
n .1906037029949554 1.232e-09 deg/d
Q 3.075664287156872 1.3254e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1328  
   data-arc span      44372 days (121.48 yr)  
   first obs. used      1892-10-10  
   last obs. used      2014-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52748  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:34:16  

Additional Information
 Earth MOID = 1.92208 AU 
 T_jup = 3.205 
[ 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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]
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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