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91624 (1999 TP44)
Classification: Main-belt Asteroid          SPK-ID: 2091624
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01033209744483212 3.8043e-08  
a 3.197617669794892 2.8144e-08 au
q 3.164579572439254 1.1777e-07 au
i 7.451402359340774 4.5528e-06 deg
node 222.46835139 3.4384e-05 deg
peri 244.1838656671459 0.00024354 deg
M 138.9709968054635 0.00024228 deg
tp 2458194.268241767249
(2018-Mar-16.76824177)
0.0014032 TDB
period 2088.518033515174
5.72
2.7574e-05
7.549e-08
d
yr
n .1723710277924131 2.2757e-09 deg/d
Q 3.23065576715053 2.8435e-08 au
  Orbit Determination Parameters
   # obs. used (total)      656  
   data-arc span      7513 days (20.57 yr)  
   first obs. used      1999-10-03  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56678  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:42:44  

Additional Information
 Earth MOID = 2.188 au 
 Jupiter MOID = 1.78386 au 
 T_jup = 3.182 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456734.5 (2014-Mar-18.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01229212384110508 3.7691e-08  
q 3.157421843694134 1.1751e-07 au
tp 2456086.624367244958
(2012-Jun-08.12436725)
0.0011821 TDB
node 222.49982590416 3.4371e-05 deg
peri 240.7986874904611 0.00020695 deg
i 7.453126933439116 4.5542e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      656  
   data-arc span      7513 days (20.57 yr)  
   first obs. used      1999-10-03  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56678  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:42:44  

Additional Information
 Jupiter MOID = 1.78386 au 
 T_jup = 3.182 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.420603983679949E-15 -4.305917408399077E-15 6.198142401971615E-12 -2.031769073255454E-15 1.064769187532615E-12 3.114179716613909E-17
q -4.305917408399077E-15 1.380953831612813E-14 -1.293585546139862E-11 7.781476570636177E-15 -2.186385212222484E-12 -1.002545454761908E-16
tp 6.198142401971615E-12 -1.293585546139862E-11 1.39741706478377E-6 -6.314038775030144E-11 2.412641078897927E-7 -2.334867523483659E-11
node -2.031769073255454E-15 7.781476570636177E-15 -6.314038775030144E-11 1.1813645560997E-9 -1.181940516728871E-9 -2.416534600089625E-11
peri 1.064769187532615E-12 -2.186385212222484E-12 2.412641078897927E-7 -1.181940516728871E-9 4.282665420443796E-8 1.995082729433727E-11
i 3.114179716613909E-17 -1.002545454761908E-16 -2.334867523483659E-11 -2.416534600089625E-11 1.995082729433727E-11 2.074036572719114E-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 14.5   n/a MPO432453  
diameter diameter 8.052 km 0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91624 (1999 TP44)          Discovered 1999-Oct-03 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TP44 = 2002 GT39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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