Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 64 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0807748461881313 3.1103e-08  
a 2.731743367609647 1.1329e-08 AU
q 2.51108721726553 8.3031e-08 AU
i 5.965075392539962 4.0516e-06 deg
node 56.87623850872594 3.5739e-05 deg
peri 283.7067862965433 4.3915e-05 deg
M 217.1594713438654 2.5753e-05 deg
tp 2457654.845651994859
(2016-Sep-23.34565199)
0.00011906 JED
period 1649.142837361184
4.52
1.0259e-05
2.809e-08
d
yr
n .2182952209136966 1.3579e-09 deg/d
Q 2.952399517953765 1.2244e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1393  
   data-arc span      52828 days (144.64 yr)  
   first obs. used      1870-06-26  
   last obs. used      2015-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48394  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:26:02  

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 LCDB (Rev. 2015-Feb); Warner et al., 2009 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) Minor Planet Bul. 41, 144-155.]
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Mar-29 22:23 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin