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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 ]

[ 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 .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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456557.5 (2013-Sep-22.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07141920821999515 3.9354e-08  
q 2.341243332821489 9.8837e-08 au
tp 2455971.431238571747
(2012-Feb-13.93123857)
0.00017758 TDB
node 32.30036247709495 6.5082e-05 deg
peri 209.5541383392069 7.6613e-05 deg
i 3.708692338957903 4.1197e-06 deg
  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
 Jupiter MOID = 2.29479 au 
 T_jup = 3.449 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.548750239299395E-15 -3.867393497429445E-15 -2.481142863370661E-12 -3.805147981740728E-15 -5.236095589300877E-13 -8.916471376428362E-16
q -3.867393497429445E-15 9.768829635725718E-15 5.896833528704642E-12 8.623618223442444E-15 1.247709750666925E-12 2.260388927223245E-15
tp -2.481142863370661E-12 5.896833528704642E-12 3.153372767567401E-8 9.834864676291515E-11 7.195006482850603E-9 1.176447041146024E-11
node -3.805147981740728E-15 8.623618223442444E-15 9.834864676291515E-11 4.235601840194085E-9 -4.203472847249257E-9 -3.747196811566554E-11
peri -5.236095589300877E-13 1.247709750666925E-12 7.195006482850603E-9 -4.203472847249257E-9 5.869488481592105E-9 4.013650257740585E-11
i -8.916471376428362E-16 2.260388927223245E-15 1.176447041146024E-11 -3.747196811566554E-11 4.013650257740585E-11 1.697166835221313E-11

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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