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52307 (1991 TH1)
Classification: Main-belt Asteroid          SPK-ID: 2052307
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2228470487990117 9.8668e-08  
a 2.297918821640619 7.071e-09 au
q 1.785834393858304 2.2469e-07 au
i 22.95059263059561 7.0022e-06 deg
node 18.18069086131536 1.0381e-05 deg
peri 3.21678991526994 1.565e-05 deg
M 78.07519334619914 9.8832e-06 deg
tp 2458724.562313992349
(2019-Aug-29.06231399)
3.4482e-05 TDB
period 1272.332000796643
3.48
5.8727e-06
1.608e-08
d
yr
n .2829450173182737 1.306e-09 deg/d
Q 2.810003249422933 8.6467e-09 au
  Orbit Determination Parameters
   # obs. used (total)      952  
   data-arc span      15500 days (42.44 yr)  
   first obs. used      1977-08-21  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48512  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:25:56  

Additional Information
 Earth MOID = .788718 au 
 Jupiter MOID = 2.65434 au 
 T_jup = 3.457 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456731.5 (2014-Mar-15.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2237210101377647 9.9148e-08  
q 1.783019569686743 2.2599e-07 au
tp 2456179.484615674051
(2012-Sep-08.98461567)
3.1957e-05 TDB
node 18.22765148079157 1.0367e-05 deg
peri 2.908571270864176 1.5564e-05 deg
i 22.97488873002578 7.0047e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      952  
   data-arc span      15500 days (42.44 yr)  
   first obs. used      1977-08-21  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48512  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:25:56  

Additional Information
 Jupiter MOID = 2.65434 au 
 T_jup = 3.457 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.830283744901747E-15 -2.240116667918227E-14 5.797204960114702E-13 3.046832830186493E-14 -3.606086595021648E-13 -6.605455512642558E-14
q -2.240116667918227E-14 5.107305084832492E-14 -1.329607632389719E-12 -6.898236971241841E-14 8.219768650892952E-13 1.510943687595443E-13
tp 5.797204960114702E-13 -1.329607632389719E-12 1.021235221119987E-9 1.965308818087144E-13 3.323955057998823E-10 -1.402764223027449E-11
node 3.046832830186493E-14 -6.898236971241841E-14 1.965308818087144E-13 1.074661143885563E-10 -9.991570617419054E-11 2.095791586703453E-11
peri -3.606086595021648E-13 8.219768650892952E-13 3.323955057998823E-10 -9.991570617419054E-11 2.42232942624361E-10 -2.05662834959571E-11
i -6.605455512642558E-14 1.510943687595443E-13 -1.402764223027449E-11 2.095791586703453E-11 -2.05662834959571E-11 4.906567244995588E-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 15.1   n/a MPO309550  
diameter diameter 2.351 km 0.269 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.320   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52307 (1991 TH1)          Discovered 1991-Oct-12 by Alu, J. at Palomar
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 TH1 = 1998 QZ91 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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