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JPL Small-Body Database Browser
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172699 (2004 BR23)
Classification: Main-belt Asteroid          SPK-ID: 2172699
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08858945200828587 5.0793e-08  
a 2.781337309626871 2.3195e-08 au
q 2.534940161516827 1.4542e-07 au
i 3.632596377298027 5.3979e-06 deg
node 125.0990954675256 8.7327e-05 deg
peri 76.22957746065781 9.4006e-05 deg
M 134.5795395318291 3.2234e-05 deg
tp 2458367.132963990544
(2018-Sep-05.63296399)
0.00015146 TDB
period 1694.255558880684
4.64
2.1193e-05
5.802e-08
d
yr
n .2124827025728252 2.6579e-09 deg/d
Q 3.027734457736916 2.5249e-08 au
  Orbit Determination Parameters
   # obs. used (total)      464  
   data-arc span      9355 days (25.61 yr)  
   first obs. used      1992-09-28  
   last obs. used      2018-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56359  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 07:07:52  

Additional Information
 Earth MOID = 1.53507 au 
 Jupiter MOID = 1.93392 au 
 T_jup = 3.324 
[ 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 15.7   n/a MPO436858  
diameter diameter 4.207 km 0.204 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.44 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
geometric albedo albedo 0.052   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172699 (2004 BR23)          Discovered 2004-Jan-18 by NEAT at Palomar
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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