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19928 (1981 DB3)
Classification: Main-belt Asteroid          SPK-ID: 2019928
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2041757302445757 5.195e-08  
a 2.610900204131637 1.6363e-08 au
q 2.077817748357349 1.4155e-07 au
i 8.111206831524814 3.9277e-06 deg
node 231.4301124993903 3.263e-05 deg
peri 131.15219510 3.3787e-05 deg
M 333.1181155071295 1.2718e-05 deg
tp 2459315.564417983031
(2021-Apr-11.06441798)
5.5295e-05 TDB
period 1540.933281105247
4.22
1.4486e-05
3.966e-08
d
yr
n .2336246509918892 2.1962e-09 deg/d
Q 3.143982659905926 1.9704e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1235  
   data-arc span      25954 days (71.06 yr)  
   first obs. used      1949-11-21  
   last obs. used      2020-12-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49849  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:09:23  

Additional Information
 Earth MOID = 1.08511 au 
 Jupiter MOID = 2.37518 au 
 T_jup = 3.366 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.35   n/a E2021B10  
rotation period rot_per 3.429 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

19928 (1981 DB3)          Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1981 DB3 = 1991 RO4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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