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73961 (1997 WP25)
Classification: Main-belt Asteroid          SPK-ID: 2073961
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2315080366533234 4.1421e-08  
a 3.175493817279664 2.0174e-08 au
q 2.440341478236482 1.3429e-07 au
i 28.91213502089608 6.1283e-06 deg
node 290.4751295089487 9.8808e-06 deg
peri 151.0687813707769 2.0312e-05 deg
M 38.89608809702845 1.432e-05 deg
tp 2458977.184556231849
(2020-May-07.68455623)
8.1681e-05 TDB
period 2066.880339122743
5.66
1.9697e-05
5.393e-08
d
yr
n .1741755403957235 1.6598e-09 deg/d
Q 3.910646156322846 2.4845e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1387  
   data-arc span      8507 days (23.29 yr)  
   first obs. used      1997-11-30  
   last obs. used      2021-03-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:10:14  

Additional Information
 Earth MOID = 1.48321 au 
 Jupiter MOID = 1.37889 au 
 T_jup = 2.969 
[ 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 13.49   n/a E2021B10  
diameter diameter 14.447 km 0.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.041   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

73961 (1997 WP25)          Discovered 1997-Nov-30 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WP25 = 2001 QM126 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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