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180531 (2004 DK55)
Classification: Main-belt Asteroid          SPK-ID: 2180531
[ 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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1339676787673158 5.8272e-08  
a 2.612032793139045 2.237e-08 au
q 2.262104822978099 1.5108e-07 au
i 7.544178435891167 6.8638e-06 deg
node 159.9698435825539 3.2951e-05 deg
peri 164.6585492201668 3.8167e-05 deg
M 182.6687620508259 2.154e-05 deg
tp 2459960.037305495013
(2023-Jan-15.53730549)		 9.8075e-05 TDB
period 1541.936057856738
4.22		 1.9808e-05
5.423e-08		 d
yr
n .2334727164370183 2.9993e-09 deg/d
Q 2.961960763299991 2.5367e-08 au
   Orbit Determination Parameters
   # obs. used (total)      302  
   data-arc span      6625 days (18.14 yr)  
   first obs. used      2002-11-28  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53837  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:43:34  

Additional Information
 Earth MOID = 1.24941 au 
 Jupiter MOID = 2.37409 au 
 T_jup = 3.384 
[ 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 16.2   n/a MPO454240  
diameter diameter 3.659 km 0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

180531 (2004 DK55)          Discovered 2004-Feb-22 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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