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664 Judith (A908 MC)
Classification: Main-belt Asteroid          SPK-ID: 2000664
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2308198807560365 1.0693e-08  
a 3.193940240221112 1.1591e-08 au
q 2.456715334831368 3.7538e-08 au
i 8.580757056515159 7.4655e-07 deg
node 170.9143356116554 1.6561e-06 deg
peri 102.4502733725117 4.574e-06 deg
M 303.8112199141156 3.3079e-06 deg
tp 2459525.913606749603
(2021-Nov-07.41360675)
1.9338e-05 TDB
period 2084.916210154331
5.71
1.1349e-05
3.107e-08
d
yr
n .1726688095409608 9.3993e-10 deg/d
Q 3.931165145610856 1.4266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3327  
   data-arc span      41172 days (112.72 yr)  
   first obs. used      1908-06-24  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4436  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:15:19  

Additional Information
 Earth MOID = 1.45687 au 
 Jupiter MOID = 1.3531 au 
 T_jup = 3.137 
[ 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 9.97   n/a E2021B10 IRAS observations used: 6
diameter diameter 85.214 km 0.588 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 13.764 h n/a LCDB (Rev. 2020-October); 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:
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.040   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.695   0.017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=6.72, mean=8.20, max.=10.35) deg.
U-B UB 0.238   0.045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=6.73, mean=9.03, max.=10.35) deg.
Tholen spectral type spec_T XC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

664 Judith (A908 MC)          Discovered 1908-Jun-24 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A908 MC = 1951 AB1 = 1956 AH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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