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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2478051943765628 3.7474e-08  
a 3.066122393373953 1.3902e-08 au
q 2.306321337701589 1.172e-07 au
i 5.505816194307132 4.1057e-06 deg
node 112.0104861524381 4.8982e-05 deg
peri 15.3908714667637 4.9767e-05 deg
M 26.25992866633712 9.0797e-06 deg
tp 2458857.454665163793
(2020-Jan-08.95466516)
4.9154e-05 TDB
period 1961.022864736424
5.37
1.3337e-05
3.651e-08
d
yr
n .1835776657547471 1.2485e-09 deg/d
Q 3.825923449046318 1.7346e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1635  
   data-arc span      19707 days (53.95 yr)  
   first obs. used      1966-01-21  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50688  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:15:52  

Additional Information
 Earth MOID = 1.32212 au 
 Jupiter MOID = 1.25343 au 
 T_jup = 3.178 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456428.5 (2013-May-16.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2489493719241138 3.7507e-08  
q 2.300978272156774 1.1733e-07 au
tp 2456898.798912693475
(2014-Aug-29.29891269)
4.6466e-05 TDB
node 112.0355047126379 4.8976e-05 deg
peri 15.76592354437183 4.9746e-05 deg
i 5.507744231978842 4.107e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1635  
   data-arc span      19707 days (53.95 yr)  
   first obs. used      1966-01-21  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50688  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:15:52  

Additional Information
 Jupiter MOID = 1.25343 au 
 T_jup = 3.178 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.406812204220018E-15 -4.384310592873307E-15 4.847830958169378E-13 -1.375906938478692E-14 1.188009204418509E-13 -7.492607258622535E-16
q -4.384310592873307E-15 1.376715310656679E-14 -1.47771840528206E-12 4.274366500846113E-14 -3.717273332445298E-13 2.499779162884734E-15
tp 4.847830958169378E-13 -1.47771840528206E-12 2.159106495567372E-9 -8.619056693248847E-12 4.371751843816682E-10 -5.047243515247349E-13
node -1.375906938478692E-14 4.274366500846113E-14 -8.619056693248847E-12 2.398668629717129E-9 -2.388834167837889E-9 3.855851915509922E-11
peri 1.188009204418509E-13 -3.717273332445298E-13 4.371751843816682E-10 -2.388834167837889E-9 2.474668972760802E-9 -3.849617783406165E-11
i -7.492607258622535E-16 2.499779162884734E-15 -5.047243515247349E-13 3.855851915509922E-11 -3.849617783406165E-11 1.686747431140135E-11

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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