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110 Lydia
Classification: Main-belt Asteroid          SPK-ID: 2000110
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 62 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08077484697821662 3.1164e-08  
a 2.731743368112514 1.1371e-08 AU
q 2.511087215569468 8.3154e-08 AU
i 5.965075498908607 4.0622e-06 deg
node 56.87623819953781 3.5825e-05 deg
peri 283.7067857589045 4.4018e-05 deg
M 217.1594718990549 2.5767e-05 deg
tp 2457654.845649632243
(2016-Sep-23.34564963)
0.00011912 JED
period 1649.142837816552
4.52
1.0297e-05
2.819e-08
d
yr
n .21829522085342 1.3629e-09 deg/d
Q 2.95239952065556 1.2289e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1361  
   data-arc span      52764 days (144.46 yr)  
   first obs. used      1870-06-26  
   last obs. used      2014-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48913  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:43:05  

Additional Information
 Earth MOID = 1.51167 AU 
 T_jup = 3.341 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.80 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
magnitude slope G 0.20   n/a PDS3 (MPC 17257) Fit
diameter diameter 86.09 km 2.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
rotation period rot_per 10.927 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Taylor, R.C.; Gehrels, T.; Silvester, A.B. (1971) Astron. J. 76, 141-146.]
[Pray, D. (2004) Minor Planet Bul. 31, 34-36.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Marciniak, A.; et al. (2007) Astron. Astrophys. 465, 331-337.]
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D.; Stephens, R.D.; Harris, A.W.; Shepard, M.K. (2009) Minor Planet Bul. 36, 38-39.]
[Stephens, Robert D.; Warner, Brian D. (2013) Minor Planet Bul. 40, 93-94.]
[Warner, B.D. (2014) http://www.minorplanetobserver.com/PDO/PDOLig htcurves.htm]
geometric albedo albedo 0.1808   0.009 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
B-V BV .705 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=25; phase (min.=.52, mean=7.62, max.=19.59) deg.
U-B UB .298 mag .031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=14; phase (min.=.52, mean=7.70, max.=19.59) deg.
Tholen spectral type spec_T M   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
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)

110 Lydia          Discovered 1870-Apr-19 by Borrelly, A. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1972 YS1 = A899 VA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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