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101712 (1999 DU2)
Classification: Main-belt Asteroid          SPK-ID: 2101712
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07069899288900182 3.9121e-08  
a 2.52301328426575 1.1398e-08 au
q 2.344638786022589 9.8122e-08 au
i 3.706969567348414 4.1194e-06 deg
node 32.18986986183072 6.5105e-05 deg
peri 210.4789155906757 7.7021e-05 deg
M 24.47923425492343 4.3747e-05 deg
tp 2458900.965632685280
(2020-Feb-21.46563269)
0.00017796 TDB
period 1463.786483684325
4.01
9.9192e-06
2.716e-08
d
yr
n .2459375079717134 1.6666e-09 deg/d
Q 2.701387782508911 1.2204e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1308  
   data-arc span      8271 days (22.64 yr)  
   first obs. used      1997-10-29  
   last obs. used      2020-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5205  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:54  

Additional Information
 Earth MOID = 1.33273 au 
 Jupiter MOID = 2.29479 au 
 T_jup = 3.449 
[ 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 14.8   n/a MPO337994  
diameter diameter 3.311 km 1.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.233   0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101712 (1999 DU2)          Discovered 1999-Feb-20 by Kobayashi, T. at Oizumi
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 DU2 = 1997 WT27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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