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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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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07106748827159906 3.9012e-08  
a 2.522916808615561 1.1621e-08 au
q 2.343619447909054 9.8299e-08 au
i 3.706773052104424 4.1041e-06 deg
node 32.14044453756323 6.5113e-05 deg
peri 210.2453247866255 7.6949e-05 deg
M 73.8958367808942 4.3577e-05 deg
tp 2458900.051325221025
(2020-Feb-20.55132522)
0.00017732 TDB
period 1463.702525504066
4.01
1.0114e-05
2.769e-08
d
yr
n .245951614981346 1.6994e-09 deg/d
Q 2.702214169322067 1.2447e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1319  
   data-arc span      8271 days (22.64 yr)  
   first obs. used      1997-10-29  
   last obs. used      2020-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52081  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:38:11  

Additional Information
 Earth MOID = 1.33029 au 
 Jupiter MOID = 2.29251 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 14.87   n/a E2021B55  
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

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