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JPL Small-Body Database Browser
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20749 (2000 AD199)
Classification: Main-belt Asteroid          SPK-ID: 2020749
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1517486328639847 4.8229e-08  
a 2.451547690443654 1.0248e-08 au
q 2.07952868001797 1.1749e-07 au
i 14.30577613112694 4.7814e-06 deg
node 152.5638269625029 1.7995e-05 deg
peri 43.8055324998119 2.2313e-05 deg
M 230.800113918579 1.6276e-05 deg
tp 2459103.674444668175
(2020-Sep-11.17444467)
6.5255e-05 TDB
period 1402.035292557362
3.84
8.7909e-06
2.407e-08
d
yr
n .2567695705743236 1.61e-09 deg/d
Q 2.823566700869338 1.1803e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1479  
   data-arc span      23635 days (64.71 yr)  
   first obs. used      1955-03-23  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47468  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:46:42  

Additional Information
 Earth MOID = 1.10412 au 
 Jupiter MOID = 2.1839 au 
 T_jup = 3.437 
[ 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 13.9   n/a MPO467948  
diameter diameter 6.375 km 0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12. h n/a LCDB (Rev. 2019-January); Warner et al., 2009 lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Lagerkvist, C.-I.; Sjolander, N.-G. (1979) Acta Astron. 29, 455-461.]
geometric albedo albedo 0.109   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20749 (2000 AD199)          Discovered 2000-Jan-09 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 AD199 = 1978 ED = 1982 HH2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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