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JPL Small-Body Database Browser
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469755 (2005 QB21)
Classification: Main-belt Asteroid          SPK-ID: 2469755
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2192103453052585 7.9667e-08  
a 2.388278014826571 1.6282e-08 au
q 1.864742766511481 1.9781e-07 au
i 2.713371670786538 6.5633e-06 deg
node 20.14718892431828 0.00012698 deg
peri 322.1968897562351 0.00012774 deg
M 250.5643781390959 1.4254e-05 deg
tp 2459010.309439234272
(2020-Jun-09.80943923)
5.5912e-05 TDB
period 1348.11129699482
3.69
1.3786e-05
3.774e-08
d
yr
n .267040266484306 2.7309e-09 deg/d
Q 2.911813263141661 1.9852e-08 au
  Orbit Determination Parameters
   # obs. used (total)      142  
   data-arc span      5026 days (13.76 yr)  
   first obs. used      2005-08-26  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64994  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 08:02:41  

Additional Information
 Earth MOID = .8568 au 
 Jupiter MOID = 2.49127 au 
 T_jup = 3.499 
[ 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 17.3   n/a MPO434690  

469755 (2005 QB21)          Discovered 2005-Aug-26 by LONEOS at Anderson Mesa
Reference: Last Updated: 2016-08-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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