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JPL Small-Body Database Browser
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20432 (1999 BD12)
Classification: Main-belt Asteroid          SPK-ID: 2020432
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2273075143524329 3.406e-08  
a 2.341830009706182 1.0052e-08 au
q 1.809514451163936 7.8769e-08 au
i 11.333074752301 4.0558e-06 deg
node 84.14700178676681 2.0099e-05 deg
peri 203.5428350871289 2.1798e-05 deg
M 95.36487421325714 9.5381e-06 deg
tp 2458253.749243754686
(2018-May-15.24924375)
3.4278e-05 TDB
period 1308.975377759788
3.58
8.4276e-06
2.307e-08
d
yr
n .2750242717446013 1.7707e-09 deg/d
Q 2.874145568248428 1.2336e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1823  
   data-arc span      11176 days (30.60 yr)  
   first obs. used      1989-05-02  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47198  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:44:04  

Additional Information
 Earth MOID = .79826 au 
 Jupiter MOID = 2.30162 au 
 T_jup = 3.503 
[ 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 14.1   n/a MPO452459  
diameter diameter 7.623 km 0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 22.6422 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.047   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20432 (1999 BD12)          Discovered 1999-Jan-22 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 BD12 = 1989 JH = 1990 WC5 = 1990 WO11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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