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 ]  
2709 Sagan (1982 FH)
Classification: Main-belt Asteroid          SPK-ID: 2002709
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06952299008062741 3.9462e-08  
a 2.195548150997278 6.1009e-09 au
q 2.042907078673954 8.6781e-08 au
i 2.732588856347479 4.3989e-06 deg
node 241.1206185094337 6.8484e-05 deg
peri 307.9604011374178 7.4248e-05 deg
M 262.6163336162925 3.0765e-05 deg
tp 2459321.937466589755
0.00010202 TDB
period 1188.263825643676
n .3029630223784603 1.2628e-09 deg/d
Q 2.348189223320602 6.5251e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2383  
   data-arc span      22282 days (61.00 yr)  
   first obs. used      1959-02-03  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45601  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:28:57  

Additional Information
 Earth MOID = 1.04404 au 
 Jupiter MOID = 2.61447 au 
 T_jup = 3.664 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1   n/a MPO448939  
diameter diameter 6.559 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.2564 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Higgins, D.; Pravec, P.; Kusnirak, P.; Hornoch, K.; Brinsfield, J.W.; Allen, B.; Warner, B.D. (2008) Minor Planet Bull. 35, 123-126.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2011)]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Oey, J.; Inasaridze, R.Y.; Kvaratskhelia, O.I.; Ayvazian, V.; et al. (2013) Minor Planet Bull. 40, 169-172.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2016)]
geometric albedo albedo 0.259   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2709 Sagan (1982 FH)          Discovered 1982-Mar-21 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1982 FH = 1951 WF1 = 1959 CC = 1959 EA1 = 1964 WT = 1982 FE2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-May-28 19:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin