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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0459119152847919 4.1789e-08  
a 2.355376736627938 7.7155e-09 au
q 2.247236879432107 9.895e-08 au
i 6.689830918399085 3.8313e-06 deg
node 309.3091742047018 2.9411e-05 deg
peri 225.8147394556872 4.6261e-05 deg
M 23.82816456119922 3.4619e-05 deg
tp 2458913.106911272455
(2020-Mar-04.60691127)
0.00012704 TDB
period 1320.349784437319
3.61
6.4876e-06
1.776e-08
d
yr
n .2726550223609251 1.3397e-09 deg/d
Q 2.46351659382377 8.0698e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2269  
   data-arc span      24420 days (66.86 yr)  
   first obs. used      1953-10-09  
   last obs. used      2020-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45547  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:14:07  

Additional Information
 Earth MOID = 1.25853 au 
 Jupiter MOID = 2.52808 au 
 T_jup = 3.544 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457052.5 (2015-Jan-30.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04636263394344766 4.1825e-08  
q 2.246308546201083 9.9092e-08 au
tp 2457595.182403780221
(2016-Jul-25.68240378)
0.00012689 TDB
node 309.3622868582428 2.9388e-05 deg
peri 226.5408835293362 4.5935e-05 deg
i 6.692571939380283 3.8328e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2269  
   data-arc span      24420 days (66.86 yr)  
   first obs. used      1953-10-09  
   last obs. used      2020-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45547  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:14:07  

Additional Information
 Jupiter MOID = 2.52808 au 
 T_jup = 3.544 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.749352043490445E-15 -4.133101645574887E-15 -6.817718034438927E-14 8.083120689337376E-16 3.461875581708567E-14 -1.452008290435411E-15
q -4.133101645574887E-15 9.819273002698497E-15 -4.213360179189796E-14 -1.511261335761009E-15 -1.443188892439971E-13 3.627054176966845E-15
tp -6.817718034438927E-14 -4.213360179189796E-14 1.610035691870166E-8 8.9625780877836E-12 4.486790242959659E-9 1.834042828245869E-12
node 8.083120689337376E-16 -1.511261335761009E-15 8.9625780877836E-12 8.636461114816993E-10 -8.547932917317899E-10 3.331999180440036E-11
peri 3.461875581708567E-14 -1.443188892439971E-13 4.486790242959659E-9 -8.547932917317899E-10 2.110003145527415E-9 -3.265068060001546E-11
i -1.452008290435411E-15 3.627054176966845E-15 1.834042828245869E-12 3.331999180440036E-11 -3.265068060001546E-11 1.469061592814502E-11

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 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

[ show close-approach data ]
Alternate Designations
 1997 XV8 = 1991 EW8 = 1996 TZ58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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