Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
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 (A870 HA)
Classification: Main-belt Asteroid          SPK-ID: 2000110
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 96 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08049375052461194 2.3375e-08  
a 2.732314914099504 6.1932e-09 au
q 2.512380639049302 6.558e-08 au
i 5.959692591634902 4.1448e-07 deg
node 56.7829486878238 2.9962e-06 deg
peri 282.0547815561188 9.8219e-06 deg
M 21.68672499932617 8.2855e-06 deg
tp 2459297.122966723205
(2021-Mar-23.62296672)
3.7948e-05 TDB
period 1649.660425018436
4.52
5.6088e-06
1.536e-08
d
yr
n .2182267299016868 7.4196e-10 deg/d
Q 2.952249189149706 6.6917e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2620  
   data-arc span      9728 days (26.63 yr)  
   first obs. used      1994-11-04  
   last obs. used      2021-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37833  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 09:16:06  

Additional Information
 Earth MOID = 1.51136 au 
 Jupiter MOID = 2.34156 au 
 T_jup = 3.341 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.85   n/a E2021B10 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. 2020-October); 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 Bull. 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 Bull. 36, 38-39.]
[Stephens, Robert D.; Warner, Brian D. (2013) Minor Planet Bull. 40, 93-94.]
[Warner, B.D. (2014) Minor Planet Bull. 41, 144-155.]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.1808   0.009 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15
B-V BV 0.705   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=25; phase (min.=.52, mean=7.62, max.=19.59) deg.
U-B UB 0.298   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A870 HA)          Discovered 1870-Apr-19 by Borrelly, A. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A870 HA = 1972 YS1 = A899 VA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-05 05:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin