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4263 Abashiri (1989 RL2)
Classification: Main-belt Asteroid          SPK-ID: 2004263
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1384835899604044 3.1014e-08  
a 2.234960496539087 6.5383e-09 au
q 1.925455143558666 6.9081e-08 au
i 5.80722838199303 3.5949e-06 deg
node 298.0463128672267 4.0186e-05 deg
peri 307.5223358824695 4.3185e-05 deg
M 164.3110469098547 1.6786e-05 deg
tp 2458443.484262225239
(2018-Nov-20.98426223)
5.609e-05 TDB
period 1220.402823608857
3.34
5.3553e-06
1.466e-08
d
yr
n .2949845682390695 1.2944e-09 deg/d
Q 2.544465849519507 7.4437e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2552  
   data-arc span      25201 days (69.00 yr)  
   first obs. used      1951-02-04  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43355  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:08:22  

Additional Information
 Earth MOID = .918221 au 
 Jupiter MOID = 2.50264 au 
 T_jup = 3.620 
[ 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 12.7   n/a MPO337287  
diameter diameter 8.981 km 0.435 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.8820 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.200   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4263 Abashiri (1989 RL2)          Discovered 1989-Sep-07 by Yanai and Watanabe at Kitami
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1989 RL2 = 1935 KE = 1952 OS = 1969 TS3 = 1972 OB = 1978 EK = 1981 AT1 = 1982 PF = 1988 DK5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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