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718 Erida (A911 SA)
Classification: Main-belt Asteroid          SPK-ID: 2000718
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1988492704264815 4.1208e-08  
a 3.057679989953388 1.3389e-08 au
q 2.449662554753505 1.2599e-07 au
i 6.92648954097953 4.711e-06 deg
node 38.53232073126908 3.1083e-05 deg
peri 174.5477378499988 3.239e-05 deg
M 263.1501273852035 1.0634e-05 deg
tp 2459525.891481070258
(2021-Nov-07.39148107)
5.9304e-05 TDB
period 1952.929085798263
5.35
1.2827e-05
3.512e-08
d
yr
n .1843384906384603 1.2108e-09 deg/d
Q 3.665697425153271 1.6051e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3006  
   data-arc span      42854 days (117.33 yr)  
   first obs. used      1902-12-24  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41449  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:11:17  

Additional Information
 Earth MOID = 1.44363 au 
 Jupiter MOID = 1.30044 au 
 T_jup = 3.193 
[ 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 9.7   n/a MPO384751  
diameter diameter 70.911 km 1.283 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 17.447 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Galad, A.; Vilagi, J.; Kornos, L.; Gajdos, S. (2009) Minor Planet Bull. 36, 116-118.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.042   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B X   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)

718 Erida (A911 SA)          Discovered 1911-Sep-29 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A911 SA = 1952 JK = 1963 KL = 1979 QG10 = A902 YD = A904 JA = A920 GE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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