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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2339009503629546 7.2239e-08  
a 2.997107776612797 2.1716e-08 au
q 2.296081419322862 2.2704e-07 au
i 3.399269254322456 5.6186e-06 deg
node 147.6466814455983 8.9592e-05 deg
peri 253.9525086407903 9.1079e-05 deg
M 346.4073201262418 1.3498e-05 deg
tp 2459272.057400557959
(2021-Feb-26.55740056)
7.129e-05 TDB
period 1895.186559244893
5.19
2.0598e-05
5.639e-08
d
yr
n .189954914065788 2.0646e-09 deg/d
Q 3.698134133902732 2.6796e-08 au
  Orbit Determination Parameters
   # obs. used (total)      603  
   data-arc span      9650 days (26.42 yr)  
   first obs. used      1994-08-11  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50602  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:25:30  

Additional Information
 Earth MOID = 1.30636 au 
 Jupiter MOID = 1.73038 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 15.82   n/a E2021B55  
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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