Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.

JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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.

[ revert to old Java-based viewer ]

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
4.1451e-05 TDB
period 1279.81562620331
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 
[ show covariance matrix ]

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] (  
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] (  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2165-Aug-15 23:46 < 00:01 Eunom 0.0337876817208279 0.0337713909084724 0.0338039728282068 7.93869971537458 7.93869966304032 2512037.490207601 0.346378286812778 827.316718221234 38.1087389072259 -10.9950547666658 25987.9620939029 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:56:36 2020-Feb-22 16:56

Alternate Designations
 1982 FQ2 = 1975 EL1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Jun-04 12:41 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin