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72804 Caldentey (2001 GQ)
Classification: Main-belt Asteroid          SPK-ID: 2072804
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07615494881177888 3.5964e-08  
a 2.97391234712434 2.3261e-08 au
q 2.747434204558369 1.0542e-07 au
i 12.14823878456076 5.2159e-06 deg
node 63.75415629245036 1.8073e-05 deg
peri 241.5822516162321 3.9896e-05 deg
M 138.7055823217315 3.6982e-05 deg
tp 2458278.757778381142
(2018-Jun-09.25777838)
0.0001917 TDB
period 1873.228138577093
5.13
2.1978e-05
6.017e-08
d
yr
n .1921816102300581 2.2548e-09 deg/d
Q 3.200390489690312 2.5032e-08 au
  Orbit Determination Parameters
   # obs. used (total)      841  
   data-arc span      8046 days (22.03 yr)  
   first obs. used      1998-10-18  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52558  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:49:59  

Additional Information
 Earth MOID = 1.75624 au 
 Jupiter MOID = 1.97208 au 
 T_jup = 3.224 
[ 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 14.4   n/a MPO453138  
diameter diameter 4.111 km 0.854 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.239   0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72804 Caldentey           Discovered 2001 Apr. 11 by S. Sanchez at the Observatorio Astronomico de Mallorca.
Maria-Dolors Caldentey Rius (b. 1956) is a founding member of the Observatorio Astronomico de Mallorca. In 1991 she designed and managed the construction of the observatory. In 2003-2004 she did the same for the Planetarium of Mallorca and the Observatorio Astronomico of La Sagra in Granada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070106/MPCPages.arcLast Updated: 2007-01-09

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Alternate Designations
 2001 GQ = 1999 XR200 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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