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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1479566075304733 1.5051e-08  
a 2.306508923637941 5.5207e-09 au
q 1.965245688057707 3.5443e-08 au
i 6.332050800357746 1.0854e-06 deg
node 153.1337398891368 5.5063e-06 deg
peri 10.61759337937264 8.4238e-06 deg
M 79.94938685859829 7.6347e-06 deg
tp 2459112.352543866306
(2020-Sep-19.85254387)
2.6751e-05 TDB
period 1279.473029468626
3.50
4.5937e-06
1.258e-08
d
yr
n .2813658371130422 1.0102e-09 deg/d
Q 2.647772159218174 6.3375e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2457  
   data-arc span      16918 days (46.32 yr)  
   first obs. used      1975-03-06  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46546  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:44:14  

Additional Information
 Earth MOID = .974401 au 
 Jupiter MOID = 2.32524 au 
 T_jup = 3.565 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457355.5 (2015-Nov-29.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1481524462404557 1.5102e-08  
q 1.965111679362136 3.5594e-08 au
tp 2457833.562102900684
(2017-Mar-21.06210290)
2.5392e-05 TDB
node 153.1655846116735 5.5049e-06 deg
peri 10.81383008051231 8.411e-06 deg
i 6.332857170238584 1.0857e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2457  
   data-arc span      16918 days (46.32 yr)  
   first obs. used      1975-03-06  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46546  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:44:14  

Additional Information
 Jupiter MOID = 2.32524 au 
 T_jup = 3.565 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.280558208819344E-16 -5.328112238282591E-16 1.154001286426128E-13 2.764058160940714E-14 4.100875748044853E-15 7.368536835762418E-15
q -5.328112238282591E-16 1.266950083747717E-15 -2.427856959019207E-13 -6.34626904965527E-14 -6.88696566642499E-15 -1.6947286052214E-14
tp 1.154001286426128E-13 -2.427856959019207E-13 6.447384770533264E-10 -1.625956703433405E-11 1.623310927075747E-10 -2.395351581749535E-12
node 2.764058160940714E-14 -6.34626904965527E-14 -1.625956703433405E-11 3.030369410127567E-11 -3.360087790653666E-11 4.573361594756308E-12
peri 4.100875748044853E-15 -6.88696566642499E-15 1.623310927075747E-10 -3.360087790653666E-11 7.074478897918581E-11 -5.064032809781457E-12
i 7.368536835762418E-15 -1.6947286052214E-14 -2.395351581749535E-12 4.573361594756308E-12 -5.064032809781457E-12 1.178826039069961E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.87   n/a MPCxxxxx  
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. 2020-October); 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

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