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3823 Yorii (1988 EC1)
Classification: Main-belt Asteroid          SPK-ID: 2003823
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2478051975674392 3.7243e-08  
a 3.066122389732499 1.1802e-08 au
q 2.306321325178888 1.1605e-07 au
i 5.505816593939361 3.9964e-06 deg
node 112.0104729022978 4.2742e-05 deg
peri 15.39088352163066 4.3537e-05 deg
M 26.25993100073538 7.0696e-06 deg
tp 2458857.454652702488
(2020-Jan-08.95465270)
3.8527e-05 TDB
period 1961.022861242936
5.37
1.1323e-05
3.1e-08
d
yr
n .1835776660817838 1.0599e-09 deg/d
Q 3.825923454286109 1.4727e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1980  
   data-arc span      19871 days (54.40 yr)  
   first obs. used      1966-01-21  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47051  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:01:56  

Additional Information
 Earth MOID = 1.32212 au 
 Jupiter MOID = 1.25343 au 
 T_jup = 3.178 
[ 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 13.1   n/a MPO502189  
diameter diameter 12.438 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.669 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2014) Minor Planet Bull. 41, 102-112.]
geometric albedo albedo 0.091   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3823 Yorii (1988 EC1)          Discovered 1988-Mar-10 by Arai, M. and Mori, H. at Yorii
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1988 EC1 = 1966 BS = 1975 TV3 = 1977 DM4 = 1980 TH2 = 1982 BP8 = 1986 WU2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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