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160855 (2001 DH81)
Classification: Main-belt Asteroid          SPK-ID: 2160855
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1937830124226726 6.2995e-08  
a 2.574758457948483 1.7014e-08 au
q 2.075814007706471 1.701e-07 au
i 13.64040315494296 5.6882e-06 deg
node 24.64740367676945 1.364e-05 deg
peri 329.5073425090201 1.8267e-05 deg
M 62.30578678115565 9.3892e-06 deg
tp 2458739.326535039597
(2019-Sep-12.82653504)		 4.0129e-05 TDB
period 1509.048392503119
4.13		 1.4957e-05
4.095e-08		 d
yr
n .2385609379980542 2.3646e-09 deg/d
Q 3.073702908190495 2.0311e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1088  
   data-arc span      7399 days (20.26 yr)  
   first obs. used      1999-11-01  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48178  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:26:24  

Additional Information
 Earth MOID = 1.08409 au 
 Jupiter MOID = 2.40665 au 
 T_jup = 3.362 
[ 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 14.9   n/a MPO407233  

160855 (2001 DH81)          Discovered 2001-Feb-26 by Kobayashi, T. at Oizumi
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

Alternate Designations
 2001 DH81 = 2003 XQ9 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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