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26991 (1997 WZ30)
Classification: Main-belt Asteroid          SPK-ID: 2026991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08581767713954978 3.9927e-08  
a 2.806592825086572 1.4712e-08 au
q 2.565737548161116 1.1597e-07 au
i 3.015293352071057 4.5059e-06 deg
node 81.19998012109954 7.855e-05 deg
peri 287.9281085781788 8.2917e-05 deg
M 241.6734691884777 2.8416e-05 deg
tp 2459164.978199368053
(2020-Nov-11.47819937)
0.00013755 TDB
period 1717.384515364418
4.70
1.3504e-05
3.697e-08
d
yr
n .2096210818132423 1.6483e-09 deg/d
Q 3.047448102012029 1.5975e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1751  
   data-arc span      9349 days (25.60 yr)  
   first obs. used      1994-01-16  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53672  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:43:35  

Additional Information
 Earth MOID = 1.56609 au 
 Jupiter MOID = 2.38417 au 
 T_jup = 3.315 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5   n/a MPO347724  
diameter diameter 6.045 km 0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.211   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26991 (1997 WZ30)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WZ30 = 1999 CN42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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