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3808 Tempel (1982 FQ2)
Classification: Main-belt Asteroid          SPK-ID: 2003808
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1481888603617961 2.9731e-08  
a 2.306920638537818 6.1425e-09 au
q 1.965060698167792 6.9902e-08 au
i 6.331644903475979 3.1822e-06 deg
node 153.1338661208419 2.9261e-05 deg
peri 10.62363612972437 3.1279e-05 deg
M 328.5276685901632 1.1612e-05 deg
tp 2459112.385504253773
(2020-Sep-19.88550425)
4.1451e-05 TDB
period 1279.81562620331
3.50
5.1115e-06
1.399e-08
d
yr
n .2812905176568072 1.1235e-09 deg/d
Q 2.648780578907845 7.0528e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2104  
   data-arc span      16401 days (44.90 yr)  
   first obs. used      1975-03-06  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47714  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:56:24  

Additional Information
 Earth MOID = .973423 au 
 Jupiter MOID = 2.32585 au 
 T_jup = 3.565 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457122.5 (2015-Apr-10.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1480910507851252 2.9798e-08  
q 1.96538312747731 7.005e-08 au
tp 2456553.527317711250
(2013-Sep-18.02731771)
3.8733e-05 TDB
node 153.1650416621806 2.9247e-05 deg
peri 10.77412669698081 3.1261e-05 deg
i 6.332718891862407 3.1831e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2104  
   data-arc span      16401 days (44.90 yr)  
   first obs. used      1975-03-06  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47714  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:56:24  

Additional Information
 Jupiter MOID = 2.32585 au 
 T_jup = 3.565 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.879083286072858E-16 -2.081808684079218E-15 -6.119753935308044E-14 4.695283123541624E-15 -1.04942886307178E-14 -1.061867413177263E-17
q -2.081808684079218E-15 4.907052356988356E-15 1.694209402080752E-13 -1.071497958697035E-14 3.420697393014511E-14 1.099668734123894E-16
tp -6.119753935308044E-14 1.694209402080752E-13 1.500212254275326E-9 -9.604295019798686E-12 4.374395730434702E-10 1.028110899593401E-12
node 4.695283123541624E-15 -1.071497958697035E-14 -9.604295019798686E-12 8.553784242302681E-10 -8.523305497590185E-10 2.87924819651842E-12
peri -1.04942886307178E-14 3.420697393014511E-14 4.374395730434702E-10 -8.523305497590185E-10 9.772251774806779E-10 -2.567499787799288E-12
i -1.061867413177263E-17 1.099668734123894E-16 1.028110899593401E-12 2.87924819651842E-12 -2.567499787799288E-12 1.013210799051088E-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 13.8   n/a MPO350831  
diameter diameter 4.667 km 0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.45073 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.294   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3808 Tempel (1982 FQ2)          Discovered 1982-Mar-24 by Borngen, F. at Tautenburg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1982 FQ2 = 1975 EL1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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