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340 Eduarda (A892 SD)
Classification: Main-belt Asteroid          SPK-ID: 2000340
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1162009700301315 3.2775e-08  
a 2.745749706498981 9.3454e-09 au
q 2.42669092714385 9.0488e-08 au
i 4.668146268855471 4.345e-06 deg
node 26.96556382986889 4.6024e-05 deg
peri 43.1585984314499 4.9857e-05 deg
M 325.1722193032772 1.9545e-05 deg
tp 2459161.273011218209
(2020-Nov-07.77301122)
9.0458e-05 TDB
period 1661.84243959023
4.55
8.4843e-06
2.323e-08
d
yr
n .216627034804074 1.106e-09 deg/d
Q 3.064808485854112 1.0431e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3024  
   data-arc span      46747 days (127.99 yr)  
   first obs. used      1892-09-25  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42927  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:25:41  

Additional Information
 Earth MOID = 1.44335 au 
 Jupiter MOID = 2.2067 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] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.0062 h n/a LCDB (Rev. 2019-August); 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, http://obswww.unige.ch/~behrend/page_cou.html]
[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] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
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 ]
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