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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1566580050343598 4.5156e-08  
a 2.245136081579237 9.9936e-09 AU
q 1.893417542008374 1.0002e-07 AU
i 2.2970172900861 6.2243e-06 deg
node 172.218145369987 0.00011404 deg
peri 322.6280555820753 0.00011608 deg
M 22.28662220928338 2.1438e-05 deg
tp 2456924.431617516591
(2014-Sep-23.93161752)
7.3016e-05 JED
period 1228.746888463889
3.36
8.2041e-06
2.246e-08
d
yr
n .2929814133243113 1.9562e-09 deg/d
Q 2.5968546211501 1.1559e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1236  
   data-arc span      16167 days (44.26 yr)  
   first obs. used      1971-02-18  
   last obs. used      2015-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51933  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:01:57  

Additional Information
 Earth MOID = .90832 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
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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