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201894 (2004 BT18)
Classification: Main-belt Asteroid          SPK-ID: 2201894
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0972066848255628 5.4817e-08  
a 3.095839492919811 3.9674e-08 au
q 2.794903199061025 1.8462e-07 au
i 7.633547571746571 5.6273e-06 deg
node 267.4605168389661 5.4684e-05 deg
peri 148.6523671399355 6.8631e-05 deg
M 341.1552229695347 4.2864e-05 deg
tp 2458704.648875112001
(2019-Aug-09.14887511)
0.00023792 TDB
period 1989.601414742491
5.45
3.8246e-05
1.047e-07
d
yr
n .1809407639804045 3.4782e-09 deg/d
Q 3.396775786778597 4.353e-08 au
  Orbit Determination Parameters
   # obs. used (total)      419  
   data-arc span      5880 days (16.10 yr)  
   first obs. used      2002-10-03  
   last obs. used      2018-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56286  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:51:27  

Additional Information
 Earth MOID = 1.81026 au 
 Jupiter MOID = 1.91147 au 
 T_jup = 3.203 
[ 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 15.1   n/a MPO454431  
diameter diameter 5.878 km 0.322 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

201894 (2004 BT18)          Discovered 2004-Jan-18 by Spacewatch at Kitt Peak
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12

[ show close-approach data ]
Alternate Designations
 2004 BT18 = 2002 TY117 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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