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123917 (2001 DY97)
Classification: Main-belt Asteroid          SPK-ID: 2123917
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1952822809453003 3.3305e-08  
a 3.094490436319884 2.0964e-08 au
q 2.49019128555192 1.0065e-07 au
i 3.055326627233949 5.308e-06 deg
node 16.61881555452688 7.1976e-05 deg
peri 255.1202881543289 7.3474e-05 deg
M 104.580730695762 1.3583e-05 deg
tp 2458422.894506316721
(2018-Oct-31.39450632)
7.5437e-05 TDB
period 1988.30106026795
5.44
2.0205e-05
5.532e-08
d
yr
n .1810590997479452 1.8399e-09 deg/d
Q 3.698789587087849 2.5057e-08 au
  Orbit Determination Parameters
   # obs. used (total)      974  
   data-arc span      8619 days (23.60 yr)  
   first obs. used      1996-04-20  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49111  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 10:13:43  

Additional Information
 Earth MOID = 1.47624 au 
 Jupiter MOID = 1.4373 au 
 T_jup = 3.192 
[ 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 14.4   n/a MPO502812  
diameter diameter 8.169 km 0.287 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123917 (2001 DY97)          Discovered 2001-Feb-17 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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