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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1596863541925701 1.8436e-08  
a 2.218424591282224 4.8174e-09 au
q 1.864172456249223 4.1421e-08 au
i 2.764660442797481 1.2835e-06 deg
node 82.04848121285953 6.6594e-06 deg
peri 336.782391297183 8.4107e-06 deg
M 57.31890567081073 7.2475e-06 deg
tp 2459008.340959056299
(2020-Jun-07.84095906)
2.4005e-05 TDB
period 1206.883731120503
3.30
3.9312e-06
1.076e-08
d
yr
n .298288882944645 9.7162e-10 deg/d
Q 2.572676726315225 5.5866e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2325  
   data-arc span      12056 days (33.01 yr)  
   first obs. used      1988-03-18  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46016  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 23:57:53  

Additional Information
 Earth MOID = .876252 au 
 Jupiter MOID = 2.74295 au 
 T_jup = 3.633 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.26   n/a MPCxxxxx  
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

Alternate Designations
 1990 YC = 1988 FU1 = 1993 TU1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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