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 ]  
340 Eduarda (A892 SD)
Classification: Main-belt Asteroid          SPK-ID: 2000340
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1158937051049449 3.5737e-08  
a 2.746377325070119 1.0384e-08 au
q 2.428089481251535 9.7281e-08 au
i 4.667976127213476 4.5821e-06 deg
node 26.97613119854336 4.727e-05 deg
peri 43.0234307549574 5.1312e-05 deg
M 238.6263239151355 2.0112e-05 deg
tp 2459160.980798900716
9.3691e-05 TDB
period 1662.412263621133
n .2165527816883602 1.2282e-09 deg/d
Q 3.064665168888702 1.1587e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2664  
   data-arc span      46351 days (126.90 yr)  
   first obs. used      1892-09-25  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45393  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:07:41  

Additional Information
 Earth MOID = 1.44447 au 
 Jupiter MOID = 2.20793 au 
 T_jup = 3.333 
[ 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 9.90   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
diameter diameter 28.025 km 0.456 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 8.0062 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Lagerkvist, C.-I. (1978) Astron. Astrophys. Suppl. Ser. 31, 361-381.]
[Behrend, R. (2007) Observatoire de Geneve web site,]
[Ditteon, R.; Hawkins, S. (2007) Minor Planet Bull. 34, 59-64.]
[Sada, P.V.; Warner, B.D. (2007) Minor Planet Bull. 34, 37-38.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
geometric albedo albedo 0.247   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a medium resolution spectrum published by Chapman and Gaffey (1979)

340 Eduarda (A892 SD)          Discovered 1892-Sep-25 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A892 SD = 1954 FA = 1959 JT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2019-Oct-17 09:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin