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102971 (1999 XP72)
Classification: Main-belt Asteroid          SPK-ID: 2102971
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1151679684631753 5.5538e-08  
a 2.659503323841503 1.6339e-08 au
q 2.353213728913615 1.5445e-07 au
i 14.95818230877679 4.8159e-06 deg
node 81.10837003586549 1.8892e-05 deg
peri 313.3811760458811 2.582e-05 deg
M 339.6402648077749 1.8679e-05 deg
tp 2459290.091922783405
(2021-Mar-16.59192278)
8.249e-05 TDB
period 1584.160692538987
4.34
1.4599e-05
3.997e-08
d
yr
n .2272496734046696 2.0942e-09 deg/d
Q 2.965792918769391 1.8221e-08 au
  Orbit Determination Parameters
   # obs. used (total)      932  
   data-arc span      7765 days (21.26 yr)  
   first obs. used      1999-11-04  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53023  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:29  

Additional Information
 Earth MOID = 1.38592 au 
 Jupiter MOID = 2.43734 au 
 T_jup = 3.329 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457555.5 (2016-Jun-16.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1178057490036424 5.5892e-08  
q 2.346405806229741 1.5591e-07 au
tp 2457703.049984374864
(2016-Nov-10.54998438)
7.5614e-05 TDB
node 81.14140631111835 1.8889e-05 deg
peri 312.9144542922804 2.5426e-05 deg
i 14.96249899119418 4.8206e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      932  
   data-arc span      7765 days (21.26 yr)  
   first obs. used      1999-11-04  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53023  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:29  

Additional Information
 Jupiter MOID = 2.43734 au 
 T_jup = 3.329 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.123897639684078E-15 -8.683569894248832E-15 -6.085741404667799E-13 -6.746808530281518E-15 -1.147617493161811E-13 -7.559964690042829E-15
q -8.683569894248832E-15 2.430651826601763E-14 1.836138532315489E-12 1.918502535442104E-14 3.451815829052767E-13 2.145069075234363E-14
tp -6.085741404667799E-13 1.836138532315489E-12 5.717523891827541E-9 2.253247960774173E-12 1.314471513534925E-9 2.092409532090039E-12
node -6.746808530281518E-15 1.918502535442104E-14 2.253247960774173E-12 3.567820009455706E-10 -3.44035082701862E-10 -2.703358928968376E-11
peri -1.147617493161811E-13 3.451815829052767E-13 1.314471513534925E-9 -3.44035082701862E-10 6.46504670947094E-10 2.658879701498701E-11
i -7.559964690042829E-15 2.145069075234363E-14 2.092409532090039E-12 -2.703358928968376E-11 2.658879701498701E-11 2.323861657351797E-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 14.79   n/a E2021B55  
diameter diameter 3.331 km 0.325 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.230   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102971 (1999 XP72)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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