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85528 (1997 WP12)
Classification: Main-belt Asteroid          SPK-ID: 2085528
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1815865568171373 5.1578e-08  
a 3.030744482248629 1.7632e-08 au
q 2.480402027124563 1.5742e-07 au
i .8557351088890597 5.9724e-06 deg
node 350.3017382092864 0.0002887 deg
peri 53.22896710386565 0.00028913 deg
M 166.2452292653586 1.5063e-05 deg
tp 2458506.542838744723
(2019-Jan-23.04283874)
7.7714e-05 TDB
period 1927.180584174874
5.28
1.6818e-05
4.605e-08
d
yr
n .1868013838226451 1.6301e-09 deg/d
Q 3.581086937372695 2.0834e-08 au
  Orbit Determination Parameters
   # obs. used (total)      507  
   data-arc span      8595 days (23.53 yr)  
   first obs. used      1997-11-01  
   last obs. used      2021-05-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57718  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:09:57  

Additional Information
 Earth MOID = 1.48889 au 
 Jupiter MOID = 1.83004 au 
 T_jup = 3.218 
[ 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 15.84   n/a MPCxxxxx  
diameter diameter 5.091 km 2.389 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85528 (1997 WP12)          Discovered 1997-Nov-23 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1997 WP12 = 2002 RQ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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