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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1952822708402029 3.307e-08  
a 3.094490447235834 2.0075e-08 au
q 2.490191325606305 9.9517e-08 au
i 3.055331852714359 5.0444e-06 deg
node 16.61881690307332 6.8251e-05 deg
peri 255.1202925628928 6.9541e-05 deg
M 104.5807250253436 1.2854e-05 deg
tp 2458422.894534578480
(2018-Oct-31.39453458)
7.0885e-05 TDB
period 1988.301070788678
5.44
1.9348e-05
5.297e-08
d
yr
n .1810590987899044 1.7619e-09 deg/d
Q 3.698789568865363 2.3995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1022  
   data-arc span      8956 days (24.52 yr)  
   first obs. used      1996-04-20  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48507  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:31:34  

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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