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312972 (1998 WO)
Classification: Main-belt Asteroid          SPK-ID: 2312972
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2407740422441122 1.1487e-07  
a 2.604981962575827 1.2688e-08 au
q 1.977769925473445 3.009e-07 au
i 14.12236345893944 1.3036e-05 deg
node 32.58132058667088 1.8806e-05 deg
peri 18.71704045880255 3.1702e-05 deg
M 308.0182568015063 1.812e-05 deg
tp 2458822.245005256696
(2019-Dec-04.74500526)
7.7296e-05 TDB
period 1535.696900113265
4.20
1.122e-05
3.072e-08
d
yr
n .2344212585005859 1.7127e-09 deg/d
Q 3.23219399967821 1.5743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      313  
   data-arc span      7681 days (21.03 yr)  
   first obs. used      1998-11-17  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49737  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 21:33:26  

Additional Information
 Earth MOID = .991787 au 
 Jupiter MOID = 2.20484 au 
 T_jup = 3.329 
[ 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 16.3   n/a MPO455307  
diameter diameter 3.144 km 0.697 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.027   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

312972 (1998 WO)          Discovered 1998-Nov-17 by Griffin, I. P. at Cocoa
Reference: 20120207/Numbers.arcLast Updated: 2012-02-09

[ show close-approach data ]
Alternate Designations
 1998 WO = 2002 RE173 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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