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90102 (2002 XQ21)
Classification: Main-belt Asteroid          SPK-ID: 2090102
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .247250095122537 4.4977e-08  
a 2.273662283520442 8.3567e-09 au
q 1.711499067643488 1.009e-07 au
i 4.921913599107428 4.8031e-06 deg
node 64.99984879702852 4.8234e-05 deg
peri 332.6088379344817 4.8949e-05 deg
M 75.28007405358939 8.628e-06 deg
tp 2458738.642570641124
(2019-Sep-12.14257064)
2.9265e-05 TDB
period 1252.239397401346
3.43
6.9038e-06
1.89e-08
d
yr
n .287484965532209 1.585e-09 deg/d
Q 2.835825499397396 1.0423e-08 au
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      7827 days (21.43 yr)  
   first obs. used      1998-08-29  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53301  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:03:46  

Additional Information
 Earth MOID = .721011 au 
 Jupiter MOID = 2.58944 au 
 T_jup = 3.565 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456567.5 (2013-Oct-02.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2476304327794543 4.5056e-08  
q 1.710224705960045 1.011e-07 au
tp 2456232.463221545414
(2012-Oct-31.96322155)
2.4996e-05 TDB
node 65.03924590480811 4.8291e-05 deg
peri 332.2081348724771 4.8998e-05 deg
i 4.920861246131028 4.801e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      7827 days (21.43 yr)  
   first obs. used      1998-08-29  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53301  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:03:46  

Additional Information
 Jupiter MOID = 2.58944 au 
 T_jup = 3.565 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.030085379773533E-15 -4.54677319851824E-15 -1.379726738126414E-14 -3.561418173410535E-14 1.278610990920805E-14 -3.338332055243063E-15
q -4.54677319851824E-15 1.022027281484723E-14 3.92648803417544E-14 7.830247063077289E-14 -2.196974661879999E-14 7.558134648520704E-15
tp -1.379726738126414E-14 3.92648803417544E-14 6.248096292862086E-10 -9.04461149544974E-13 2.20477986091672E-10 -3.615361400911228E-13
node -3.561418173410535E-14 7.830247063077289E-14 -9.04461149544974E-13 2.331986614014751E-9 -2.322683390711993E-9 -5.105792629404452E-11
peri 1.278610990920805E-14 -2.196974661879999E-14 2.20477986091672E-10 -2.322683390711993E-9 2.400852900145263E-9 5.079606612332659E-11
i -3.338332055243063E-15 7.558134648520704E-15 -3.615361400911228E-13 -5.105792629404452E-11 5.079606612332659E-11 2.304967555309066E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO449555  
diameter diameter 3.170 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.133   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90102 (2002 XQ21)          Discovered 2002-Dec-02 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 2002 XQ21 = 2000 FL19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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