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8504 (1990 YC)
Classification: Main-belt Asteroid          SPK-ID: 2008504
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1593507386804261 3.36e-08  
a 2.218654548851891 6.5131e-09 au
q 1.865110307615655 7.6705e-08 au
i 2.764878660953237 3.3626e-06 deg
node 82.05090105844386 7.9804e-05 deg
peri 336.6712592297781 8.0826e-05 deg
M 238.4264116073128 1.4046e-05 deg
tp 2459008.133334518093
(2020-Jun-07.63333452)
4.8095e-05 TDB
period 1207.071390806629
3.30
5.3152e-06
1.455e-08
d
yr
n .2982425088870916 1.3133e-09 deg/d
Q 2.572198790088128 7.5509e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1910  
   data-arc span      11577 days (31.70 yr)  
   first obs. used      1988-03-18  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47652  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 21:59:27  

Additional Information
 Earth MOID = .877508 au 
 Jupiter MOID = 2.74345 au 
 T_jup = 3.633 
[ 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 14.2   n/a MPO452290  
diameter diameter 4.349 km 0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.235   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

8504 (1990 YC)          Discovered 1990-Dec-17 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19980313/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 YC = 1988 FU1 = 1993 TU1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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