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JPL Small-Body Database Browser
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58940 (1998 QP21)
Classification: Main-belt Asteroid          SPK-ID: 2058940
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 .0838320971699376 8.3758e-08  
a 2.107749475554535 9.9226e-09 au
q 1.931052416709962 1.8206e-07 au
i 2.600369930385909 4.8701e-06 deg
node 12.44997791250853 0.00018865 deg
peri 315.5049555101931 0.00019899 deg
M 273.8970512838828 6.8361e-05 deg
tp 2458867.826760574393
(2020-Jan-19.32676057)
0.00021345 TDB
period 1117.704274264502
3.06
7.8927e-06
2.161e-08
d
yr
n .3220887745436025 2.2744e-09 deg/d
Q 2.284446534399107 1.0754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      519  
   data-arc span      10285 days (28.16 yr)  
   first obs. used      1991-03-12  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59599  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:14:08  

Additional Information
 Earth MOID = .919768 au 
 Jupiter MOID = 2.93027 au 
 T_jup = 3.736 
[ 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 16.1   n/a MPO337722  

58940 (1998 QP21)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QP21 = 2000 DA93 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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