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100388 (1995 WW7)
Classification: Main-belt Asteroid          SPK-ID: 2100388
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2507596026434746 4.6785e-08  
a 3.072510453559294 1.7647e-08 au
q 2.302048953106844 1.4612e-07 au
i 12.49197683295739 4.6915e-06 deg
node 257.2247231984459 2.7283e-05 deg
peri 136.901399322231 3.0052e-05 deg
M 263.3826882962758 1.2188e-05 deg
tp 2459728.447732886429
(2022-May-28.94773289)
6.9525e-05 TDB
period 1967.154544952925
5.39
1.6948e-05
4.64e-08
d
yr
n .1830054486179758 1.5767e-09 deg/d
Q 3.842971954011745 2.2073e-08 au
  Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      9054 days (24.79 yr)  
   first obs. used      1995-11-24  
   last obs. used      2020-09-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54049  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:06:28  

Additional Information
 Earth MOID = 1.32638 au 
 Jupiter MOID = 1.68729 au 
 T_jup = 3.146 
[ 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 14.28   n/a E2021B55  
diameter diameter 4.787 km 0.894 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.194   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100388 (1995 WW7)          Discovered 1995-Nov-28 by Kobayashi, T. at Oizumi
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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