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172532 (2003 UN8)
Classification: Main-belt Asteroid          SPK-ID: 2172532
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2176801062460038 4.7406e-08  
a 2.4311508480857 1.2565e-08 au
q 1.901937673174342 1.1955e-07 au
i 10.48877233415456 7.2762e-06 deg
node 38.64954009592173 2.7826e-05 deg
peri 33.80257163543711 3.8055e-05 deg
M 167.2524105533668 2.6565e-05 deg
tp 2458557.240554370353
(2019-Mar-14.74055437)
9.8213e-05 TDB
period 1384.574366734059
3.79
1.0734e-05
2.939e-08
d
yr
n .2600077024747828 2.0157e-09 deg/d
Q 2.960364022997057 1.53e-08 au
  Orbit Determination Parameters
   # obs. used (total)      425  
   data-arc span      7536 days (20.63 yr)  
   first obs. used      1999-10-08  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5453  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:53:14  

Additional Information
 Earth MOID = .924478 au 
 Jupiter MOID = 2.39405 au 
 T_jup = 3.452 
[ 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 16.56   n/a MPCxxxxx  
diameter diameter 3.354 km 0.770 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172532 (2003 UN8)          Discovered 2003-Oct-16 by LONEOS at Anderson Mesa
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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