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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2376867129669572 3.8344e-08  
a 2.593245467757524 6.5451e-09 au
q 1.976865476609779 9.8299e-08 au
i 7.58364353402012 4.3197e-06 deg
node 215.4026968970457 2.4122e-05 deg
peri 173.9551072592177 2.5022e-05 deg
M 233.4504129388188 8.4274e-06 deg
tp 2459536.694185026626
(2021-Nov-18.19418503)
3.6838e-05 TDB
period 1525.330197373649
4.18
5.7747e-06
1.581e-08
d
yr
n .2360144712402972 8.9351e-10 deg/d
Q 3.20962545890527 8.1008e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2814  
   data-arc span      40871 days (111.90 yr)  
   first obs. used      1908-07-23  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42977  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:18:29  

Additional Information
 Earth MOID = .982426 au 
 Jupiter MOID = 2.238 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-August); 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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