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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1828882751554997 7.032e-08  
a 3.107716700256343 5.0622e-08 AU
q 2.53935175327452 2.2184e-07 AU
i 15.02171163222341 8.8365e-06 deg
node 124.7640304763372 2.936e-05 deg
peri 254.8725661001651 4.1616e-05 deg
M 283.1299133852215 3.7288e-05 deg
tp 2457427.782817724205
(2016-Feb-09.28281772)
0.00021483 JED
period 2001.062066595113
5.48
4.8893e-05
1.339e-07
d
yr
n .1799044647388446 4.3957e-09 deg/d
Q 3.676081647238167 5.988e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      565  
   data-arc span      11698 days (32.03 yr)  
   first obs. used      1982-07-20  
   last obs. used      2014-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5596  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:34:48  

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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