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18581 Batllo (1997 XV8)
Classification: Main-belt Asteroid          SPK-ID: 2018581
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04585576960143154 2.2588e-08  
a 2.356834183438475 7.484e-09 au
q 2.248759738133942 5.4003e-08 au
i 6.688938960058961 3.5925e-07 deg
node 309.3100712217364 1.5592e-06 deg
peri 226.7021285528261 1.3715e-05 deg
M 130.8723951195887 1.4035e-05 deg
tp 2458916.061812929773
(2020-Mar-07.56181293)
5.1745e-05 TDB
period 1321.575471949117
3.62
6.2949e-06
1.723e-08
d
yr
n .2724021500407059 1.2975e-09 deg/d
Q 2.464908628743007 7.8272e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2376  
   data-arc span      24729 days (67.70 yr)  
   first obs. used      1953-10-09  
   last obs. used      2021-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45721  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:38:31  

Additional Information
 Earth MOID = 1.26078 au 
 Jupiter MOID = 2.52481 au 
 T_jup = 3.543 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8   n/a MPO416907  
diameter diameter 4.187 km 0.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.231   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18581 Batllo           Discovered 1997 Dec. 7 by the OCA-DLR Asteroid Survey at Caussols.
Valerie Batllo (b. 1967) works on cometary orbits at the Institut de Mécanique Céleste in Paris. She studies in particular how the short-period comets could be produced by encounters with the giant planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1997 XV8 = 1991 EW8 = 1996 TZ58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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