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8505 (1990 YK)
Classification: Main-belt Asteroid          SPK-ID: 2008505
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1566579319408 5.7802e-08  
a 2.245136099546915 1.3315e-08 AU
q 1.893417721266261 1.3347e-07 AU
i 2.297007942543182 6.774e-06 deg
node 172.2183019214213 0.00012106 deg
peri 322.6278936025877 0.00012312 deg
M 22.28661417202508 2.1894e-05 deg
tp 2456924.431644036092
(2014-Sep-23.93164404)
7.4496e-05 JED
period 1228.746903214261
3.36
1.0931e-05
2.993e-08
d
yr
n .2929814098072445 2.6063e-09 deg/d
Q 2.596854477827569 1.5401e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1091  
   data-arc span      15718 days (43.03 yr)  
   first obs. used      1971-02-18  
   last obs. used      2014-03-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52645  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:16:56  

Additional Information
 Earth MOID = .908321 AU 
 T_jup = 3.614 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO272679  

8505 (1990 YK)          Discovered 1990-Dec-19 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 19980313/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 YK = 1971 DP1 = 1981 CE1 = 1988 GP 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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