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120620 (1995 YT20)
Classification: Main-belt Asteroid          SPK-ID: 2120620
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2340310395443002 7.3886e-08  
a 2.998168604512332 2.4205e-08 au
q 2.296504089269227 2.3123e-07 au
i 3.398862729021425 5.7707e-06 deg
node 147.6447629349346 0.00010042 deg
peri 253.877834526848 0.00010169 deg
M 308.4896156964422 1.3665e-05 deg
tp 2459271.815618071500
(2021-Feb-26.31561807)
7.3017e-05 TDB
period 1896.192851719681
5.19
2.2962e-05
6.287e-08
d
yr
n .1898541067030769 2.2991e-09 deg/d
Q 3.699833119755437 2.9869e-08 au
  Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      9538 days (26.11 yr)  
   first obs. used      1994-08-11  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52248  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 20:15:28  

Additional Information
 Earth MOID = 1.30774 au 
 Jupiter MOID = 1.72784 au 
 T_jup = 3.209 
[ 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 15.7   n/a MPO453677  
diameter diameter 4.135 km 0.464 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.059   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

120620 (1995 YT20)          Discovered 1995-Dec-25 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1995 YT20 = 1994 RQ15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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