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37591 (1991 TD4)
Classification: Main-belt Asteroid          SPK-ID: 2037591
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2701915936428168 5.7206e-08  
a 2.610727613588962 1.4772e-08 au
q 1.905330959106053 1.5617e-07 au
i 17.94896668823676 4.5365e-06 deg
node 174.5313777661312 1.3173e-05 deg
peri 160.5065337975509 1.5606e-05 deg
M 310.3346620814687 7.7034e-06 deg
tp 2459213.064954872561
(2020-Dec-29.56495487)
3.3734e-05 TDB
period 1540.780491207923
4.22
1.3077e-05
3.58e-08
d
yr
n .2336478181377878 1.983e-09 deg/d
Q 3.316124268071872 1.8763e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1218  
   data-arc span      10478 days (28.69 yr)  
   first obs. used      1991-10-10  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53354  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 20:48:03  

Additional Information
 Earth MOID = .905065 au 
 Jupiter MOID = 2.1472 au 
 T_jup = 3.291 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457245.5 (2015-Aug-11.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2694647450143395 5.7293e-08  
q 1.907024425250922 1.5631e-07 au
tp 2457673.654510098730
(2016-Oct-12.15451010)
3.0467e-05 TDB
node 174.5538794591881 1.3172e-05 deg
peri 160.679936010967 1.5611e-05 deg
i 17.9483284376087 4.5364e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1218  
   data-arc span      10478 days (28.69 yr)  
   first obs. used      1991-10-10  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53354  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 20:48:03  

Additional Information
 Jupiter MOID = 2.1472 au 
 T_jup = 3.291 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.282451743175501E-15 -8.941998398192203E-15 2.242265962785305E-16 -1.642192908897305E-14 2.217424046725083E-13 -2.001843443676481E-14
q -8.941998398192203E-15 2.443378273327563E-14 1.672978766112032E-14 4.724338603705047E-14 -6.06520972062496E-13 5.58764328184008E-14
tp 2.242265962785305E-16 1.672978766112032E-14 9.282315749794001E-10 -2.363924033477685E-12 2.429090617729227E-10 8.781583952636478E-12
node -1.642192908897305E-14 4.724338603705047E-14 -2.363924033477685E-12 1.734971745965415E-10 -1.659386490394873E-10 6.614171899601077E-12
peri 2.217424046725083E-13 -6.06520972062496E-13 2.429090617729227E-10 -1.659386490394873E-10 2.437142085155905E-10 -5.014477280771071E-12
i -2.001843443676481E-14 5.58764328184008E-14 8.781583952636478E-12 6.614171899601077E-12 -5.014477280771071E-12 2.057936721413581E-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 14.2   n/a MPO474231  
diameter diameter 6.105 km 0.361 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.143   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37591 (1991 TD4)          Discovered 1991-Oct-10 by Lawrence, K. J. at Palomar
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 TD4 = 1998 FG120 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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