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JPL Small-Body Database Browser
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666 Desdemona (A908 OG)
Classification: Main-belt Asteroid          SPK-ID: 2000666
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2380664926395595 4.5118e-08  
a 2.592294627043359 7.4614e-09 au
q 1.975156137294771 1.1466e-07 au
i 7.585867254149812 4.6522e-06 deg
node 215.40677965047 2.8139e-05 deg
peri 174.0392251971983 2.906e-05 deg
M 138.8867122938977 8.319e-06 deg
tp 2458012.356687613241
(2017-Sep-15.85668761)		 3.4249e-05 TDB
period 1524.491356748288
4.17		 6.582e-06
1.802e-08		 d
yr
n .2361443365398105 1.0195e-09 deg/d
Q 3.209433116791946 9.2378e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2384  
   data-arc span      40469 days (110.80 yr)  
   first obs. used      1908-07-23  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45824  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:11:34  

Additional Information
 Earth MOID = .980057 au 
 Jupiter MOID = 2.23557 au 
 T_jup = 3.366 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.7   n/a MPO384750  
diameter diameter 32.741 km 0.368 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 14.607 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
geometric albedo albedo 0.095   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

666 Desdemona (A908 OG)          Discovered 1908-Jul-23 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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