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18354 (1990 RK5)
Classification: Main-belt Asteroid          SPK-ID: 2018354
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .267579267763692 4.0243e-08  
a 2.863453642440138 1.0076e-08 au
q 2.09725281352073 1.1544e-07 au
i 4.694685957834815 3.8447e-06 deg
node 207.6784922991278 5.0881e-05 deg
peri 119.7273001393723 5.1338e-05 deg
M 342.4641712762999 5.5669e-06 deg
tp 2458686.709962443066
(2019-Jul-22.20996244)
2.7405e-05 TDB
period 1769.838595512642
4.85
9.3418e-06
2.558e-08
d
yr
n .2034083791102568 1.0737e-09 deg/d
Q 3.629654471359547 1.2772e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1312  
   data-arc span      12501 days (34.23 yr)  
   first obs. used      1985-09-07  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5054  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:27:43  

Additional Information
 Earth MOID = 1.08997 au 
 Jupiter MOID = 1.77464 au 
 T_jup = 3.242 
[ 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 14.3   n/a MPO502308  
diameter diameter 7.100 km 2.255 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.041   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

18354 (1990 RK5)          Discovered 1990-Sep-15 by Holt, H. E. at Palomar
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 RK5 = 1995 UT5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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