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20657 Alvarez-Candal (1999 TL261)
Classification: Main-belt Asteroid          SPK-ID: 2020657
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1828882710285075 6.7247e-08  
a 3.107716698137609 4.9801e-08 AU
q 2.539351764368799 2.1452e-07 AU
i 15.02171048097682 8.5028e-06 deg
node 124.7640267498793 2.8421e-05 deg
peri 254.8725698386401 4.1012e-05 deg
M 283.1299138789429 3.7268e-05 deg
tp 2457427.782814542892
(2016-Feb-09.28281454)
0.00021466 JED
period 2001.062064548729
5.48
4.8101e-05
1.317e-07
d
yr
n .1799044649228237 4.3245e-09 deg/d
Q 3.676081631906417 5.891e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      594  
   data-arc span      11714 days (32.07 yr)  
   first obs. used      1982-07-20  
   last obs. used      2014-08-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54743  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:42:22  

Additional Information
 Earth MOID = 1.59014 AU 
 T_jup = 3.142 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO302191  

20657 Alvarez-Candal           Discovered 1999 Oct. 14 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Alvaro Alvarez-Candal (b. 1977) is a planetary scientist who works at Paris Observatory. Using spectroscopy, he studies minor planets, transneptunian objects and the relationship between minor planets and comets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080718/MPCPages.arcLast Updated: 2008-07-18

Alternate Designations
 1999 TL261 = 2000 AH200 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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