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20627 (1999 TF38)
Classification: Main-belt Asteroid          SPK-ID: 2020627
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08401835678255674 3.0306e-08  
a 3.080768322876035 1.5869e-08 au
q 2.821927230760237 9.6801e-08 au
i 1.591428593011117 3.5123e-06 deg
node 167.314876958028 0.0001151 deg
peri 128.9218609895259 0.00011755 deg
M 37.32242612371483 2.1846e-05 deg
tp 2458995.735647047895
(2020-May-26.23564705)
0.00012033 TDB
period 1975.090440755645
5.41
1.5261e-05
4.178e-08
d
yr
n .1822701343550975 1.4083e-09 deg/d
Q 3.339609414991832 1.7202e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1558  
   data-arc span      15346 days (42.02 yr)  
   first obs. used      1978-11-29  
   last obs. used      2020-12-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49295  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:25:22  

Additional Information
 Earth MOID = 1.80439 au 
 Jupiter MOID = 1.81274 au 
 T_jup = 3.222 
[ 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 14.12   n/a E2021B10  
diameter diameter 3.932 km 0.797 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.198   0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20627 (1999 TF38)          Discovered 1999-Oct-01 by CSS at Catalina
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TF38 = 1978 WM4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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