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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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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1985566955034724 2.4164e-08  
a 3.057207693038869 1.1362e-08 au
q 2.450178636041277 7.6118e-08 au
i 6.926462073989297 6.0298e-07 deg
node 38.51677039016138 5.5021e-06 deg
peri 174.5655555111491 6.6887e-06 deg
M 336.1227079152421 2.635e-06 deg
tp 2459525.999596075387
(2021-Nov-07.49959608)
1.4646e-05 TDB
period 1952.476621789926
5.35
1.0884e-05
2.98e-08
d
yr
n .1843812089642186 1.0279e-09 deg/d
Q 3.664236750036461 1.3618e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3631  
   data-arc span      43320 days (118.60 yr)  
   first obs. used      1902-12-24  
   last obs. used      2021-08-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39956  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:56:05  

Additional Information
 Earth MOID = 1.44477 au 
 Jupiter MOID = 1.29966 au 
 T_jup = 3.194 
[ 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 9.70   n/a MPO636071  
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. 2020-October); 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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