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JPL Small-Body Database Browser
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136852 (1998 DQ18)
Classification: Main-belt Asteroid          SPK-ID: 2136852
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06166197052039003 3.1909e-08  
a 2.283719990444474 1.0732e-08 au
q 2.142901315716861 7.2224e-08 au
i 3.837001582506832 4.176e-06 deg
node 138.7881973493025 8.1006e-05 deg
peri 333.0719751855446 9.5399e-05 deg
M 200.5224340783789 4.9886e-05 deg
tp 2459558.918509128973
(2021-Dec-10.41850913)
0.0001747 TDB
period 1260.557634703501
3.45
8.8858e-06
2.433e-08
d
yr
n .2855878938726006 2.0131e-09 deg/d
Q 2.424538665172086 1.1394e-08 au
  Orbit Determination Parameters
   # obs. used (total)      458  
   data-arc span      7745 days (21.20 yr)  
   first obs. used      1998-02-24  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55362  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:13:26  

Additional Information
 Earth MOID = 1.16018 au 
 Jupiter MOID = 2.61742 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 16.6   n/a MPO475190  

136852 (1998 DQ18)          Discovered 1998-Feb-24 by Spacewatch at Kitt Peak
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1998 DQ18 = 2002 LX60 = 2003 SP197 = 2005 EJ14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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