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180514 (2004 DB21)
Classification: Main-belt Asteroid          SPK-ID: 2180514
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2619380960175498 4.6266e-08  
a 2.699954221268961 2.0625e-08 au
q 1.992733353215223 1.1967e-07 au
i 12.03607809284066 5.5656e-06 deg
node 124.7613579166933 2.403e-05 deg
peri 112.6434380364631 2.6624e-05 deg
M 235.2418985813691 1.384e-05 deg
tp 2459762.064032527831
(2022-Jul-01.56403253)
6.5837e-05 TDB
period 1620.440271302726
4.44
1.8568e-05
5.084e-08
d
yr
n .2221618447624632 2.5456e-09 deg/d
Q 3.407175089322699 2.6027e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      7533 days (20.62 yr)  
   first obs. used      2000-05-28  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53318  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:26:49  

Additional Information
 Earth MOID = 1.01481 au 
 Jupiter MOID = 1.77211 au 
 T_jup = 3.287 
[ 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 15.7   n/a MPO449916  
diameter diameter 4.809 km 0.994 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.095 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.]
geometric albedo albedo 0.044   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

180514 (2004 DB21)          Discovered 2004-Feb-17 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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