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172708 (2004 BT46)
Classification: Main-belt Asteroid          SPK-ID: 2172708
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1275709283516006 5.961e-08  
a 2.623617562082015 1.659e-08 au
q 2.288920234047649 1.5601e-07 au
i 10.5617194758276 5.2898e-06 deg
node 296.5333257464554 3.0691e-05 deg
peri 225.3236894456459 3.4356e-05 deg
M 282.5794831569632 1.8073e-05 deg
tp 2459334.312646845620
(2021-Apr-29.81264685)
7.8823e-05 TDB
period 1552.20551043417
4.25
1.4723e-05
4.031e-08
d
yr
n .2319280517818184 2.1999e-09 deg/d
Q 2.95831489011638 1.8707e-08 au
  Orbit Determination Parameters
   # obs. used (total)      518  
   data-arc span      7264 days (19.89 yr)  
   first obs. used      2000-03-09  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52591  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:53:00  

Additional Information
 Earth MOID = 1.31199 au 
 Jupiter MOID = 2.10943 au 
 T_jup = 3.368 
[ 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 15.5   n/a MPO454184  
diameter diameter 5.084 km 0.581 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172708 (2004 BT46)          Discovered 2004-Jan-21 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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