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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1514064278627562 2.0928e-08  
a 2.450914743912186 8.278e-09 au
q 2.07983049754028 5.4988e-08 au
i 14.30774318465393 9.7703e-07 deg
node 152.5555047118191 1.6947e-06 deg
peri 43.86318036226491 7.3359e-06 deg
M 24.81574016652312 1.0123e-05 deg
tp 2459103.891471780082
(2020-Sep-11.39147178)
3.914e-05 TDB
period 1401.492356294417
3.84
7.1003e-06
1.944e-08
d
yr
n .2568690427622806 1.3014e-09 deg/d
Q 2.821998990284092 9.5313e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1808  
   data-arc span      23833 days (65.25 yr)  
   first obs. used      1955-03-23  
   last obs. used      2020-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4557  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:30:01  

Additional Information
 Earth MOID = 1.10353 au 
 Jupiter MOID = 2.18313 au 
 T_jup = 3.438 
[ 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 13.97   n/a E2021B10  
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 10.2287 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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