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JPL Small-Body Database Browser
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12021 (1996 XX19)
Classification: Main-belt Asteroid          SPK-ID: 2012021
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1604361158626785 3.7275e-08  
a 2.239817244515752 6.1438e-09 au
q 1.880469665563398 8.3439e-08 au
i 4.019369953122095 3.281e-06 deg
node 102.1377137070167 6.0912e-05 deg
peri 251.2078322059137 6.1891e-05 deg
M 324.9936738232566 1.0523e-05 deg
tp 2458719.558755095125
(2019-Aug-24.05875510)
3.5754e-05 TDB
period 1224.383033450678
3.35
5.0377e-06
1.379e-08
d
yr
n .2940256359036699 1.2098e-09 deg/d
Q 2.599164823468107 7.1295e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1542  
   data-arc span      17759 days (48.62 yr)  
   first obs. used      1971-04-16  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52914  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:21:29  

Additional Information
 Earth MOID = .878817 au 
 Jupiter MOID = 2.82588 au 
 T_jup = 3.615 
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Orbital Elements at Epoch 2456611.5 (2013-Nov-15.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1607660970788964 3.7384e-08  
q 1.880445065018289 8.3834e-08 au
tp 2456271.138778035366
(2012-Dec-09.63877804)
3.7708e-05 TDB
node 102.1798805228237 6.0934e-05 deg
peri 251.3504274268246 6.1902e-05 deg
i 4.018524082614293 3.2802e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1542  
   data-arc span      17759 days (48.62 yr)  
   first obs. used      1971-04-16  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52914  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:21:29  

Additional Information
 Jupiter MOID = 2.82588 au 
 T_jup = 3.615 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.397542105612352E-15 -3.128037332975595E-15 3.018965691272319E-13 -1.062105557499055E-15 9.843662346995826E-14 -1.872567717263539E-15
q -3.128037332975595E-15 7.028122225366522E-15 -7.453830534892333E-13 3.067230206598783E-15 -2.391192409319774E-13 4.274353631000709E-15
tp 3.018965691272319E-13 -7.453830534892333E-13 1.421918363254571E-9 1.288034369434582E-12 4.29936026071005E-10 -6.50370092729881E-13
node -1.062105557499055E-15 3.067230206598783E-15 1.288034369434582E-12 3.71296833500823E-9 -3.703201760621766E-9 -1.464641351618862E-11
peri 9.843662346995826E-14 -2.391192409319774E-13 4.29936026071005E-10 -3.703201760621766E-9 3.831884761325882E-9 1.439241886746049E-11
i -1.872567717263539E-15 4.274353631000709E-15 -6.50370092729881E-13 -1.464641351618862E-11 1.439241886746049E-11 1.075953048508763E-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 14.9   n/a MPO502260  
diameter diameter 2.741 km 0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.310   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12021 (1996 XX19)          Discovered 1996-Dec-12 by Kobayashi, T. at Oizumi
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1996 XX19 = 1992 PQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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