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103221 (1999 YC5)
Classification: Main-belt Asteroid          SPK-ID: 2103221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02997503884501278 3.9253e-08  
a 2.723070946936361 1.5096e-08 au
q 2.641446789524218 1.1025e-07 au
i 15.6393652849086 4.3125e-06 deg
node 128.7246885671937 1.3531e-05 deg
peri 205.3759411930346 6.7878e-05 deg
M 21.07194186178439 6.4754e-05 deg
tp 2459104.429750101349
(2020-Sep-11.92975010)
0.00029547 TDB
period 1641.295813663833
4.49
1.3648e-05
3.737e-08
d
yr
n .2193388888236904 1.8239e-09 deg/d
Q 2.804695104348505 1.5548e-08 au
  Orbit Determination Parameters
   # obs. used (total)      779  
   data-arc span      7639 days (20.91 yr)  
   first obs. used      1999-12-29  
   last obs. used      2020-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57377  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:45  

Additional Information
 Earth MOID = 1.63072 au 
 Jupiter MOID = 2.3898 au 
 T_jup = 3.303 
[ 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 15.18   n/a E2021B55  
diameter diameter 2.644 km 0.690 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.253   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

103221 (1999 YC5)          Discovered 1999-Dec-29 by Cooney Jr., W. R. at Baton Rouge
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 YC5 = 2001 KV64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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