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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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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2476756544358688 3.7127e-08  
a 3.065406143105317 1.1752e-08 au
q 2.306179670499975 1.1561e-07 au
i 5.505829891621117 3.987e-06 deg
node 112.009804732411 4.271e-05 deg
peri 15.3574670624319 4.3504e-05 deg
M 63.01973070879531 7.071e-06 deg
tp 2458857.333801104838
(2020-Jan-08.83380110)
3.8511e-05 TDB
period 1960.335758543899
5.37
1.1273e-05
3.086e-08
d
yr
n .1836420105234428 1.0561e-09 deg/d
Q 3.824632615710659 1.4663e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1994  
   data-arc span      20084 days (54.99 yr)  
   first obs. used      1966-01-21  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47287  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:06:19  

Additional Information
 Earth MOID = 1.3219 au 
 Jupiter MOID = 1.25443 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 13.13   n/a E2021B10  
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. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2014) Minor Planet Bull. 41, 102-112.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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

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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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