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30813 (1990 QT)
Classification: Main-belt Asteroid          SPK-ID: 2030813
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1668133364809576 3.5989e-08  
a 2.284437198450183 7.8717e-09 au
q 1.903362607395497 8.2245e-08 au
i 6.178228904301713 4.0852e-06 deg
node 351.5632565896875 3.1205e-05 deg
peri 353.6850927666907 3.3216e-05 deg
M 268.8713440717574 1.3835e-05 deg
tp 2459519.741781707083
(2021-Nov-01.24178171)
4.9287e-05 TDB
period 1261.151503266402
3.45
6.5185e-06
1.785e-08
d
yr
n .2854534122725101 1.4754e-09 deg/d
Q 2.665511789504869 9.1848e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1491  
   data-arc span      24726 days (67.70 yr)  
   first obs. used      1952-09-11  
   last obs. used      2020-05-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49101  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:40:27  

Additional Information
 Earth MOID = .894483 au 
 Jupiter MOID = 2.73914 au 
 T_jup = 3.577 
[ 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 14.58   n/a MPCxxxxx  
diameter diameter 4.323 km 0.298 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.197   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30813 (1990 QT)          Discovered 1990-Aug-19 by Helin, E. F. at Palomar
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 QT = 1952 RN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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