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172454 (2003 QR101)
Classification: Main-belt Asteroid          SPK-ID: 2172454
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07582358488272913 4.5817e-08  
a 2.270847921904476 1.1876e-08 au
q 2.098664091742183 1.0178e-07 au
i 7.245111758214981 4.1839e-06 deg
node 87.57732363756855 3.209e-05 deg
peri 305.861052251575 4.1407e-05 deg
M 285.468578667956 2.6324e-05 deg
tp 2459259.272073290382
(2021-Feb-13.77207329)
9.1823e-05 TDB
period 1249.915065613878
3.42
9.8054e-06
2.685e-08
d
yr
n .2880195702123097 2.2595e-09 deg/d
Q 2.443031752066769 1.2777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      648  
   data-arc span      6705 days (18.36 yr)  
   first obs. used      2000-12-30  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5766  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:41:26  

Additional Information
 Earth MOID = 1.11518 au 
 Jupiter MOID = 2.8474 au 
 T_jup = 3.598 
[ 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 16.2   n/a MPO266536  
diameter diameter 1.968 km 0.573 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.182   0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172454 (2003 QR101)          Discovered 2003-Aug-29 by NEAT at Haleakala
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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