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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2273784231477336 2.0129e-08  
a 2.341718978296623 9.0763e-09 au
q 1.809262609556415 4.7127e-08 au
i 11.33194201744933 1.1668e-06 deg
node 84.14160362332194 3.0279e-06 deg
peri 203.6427753885397 5.5047e-06 deg
M 260.2350867220591 7.8423e-06 deg
tp 2459563.223688393087
(2021-Dec-14.72368839)
2.9504e-05 TDB
period 1308.882286678478
3.58
7.6097e-06
2.083e-08
d
yr
n .2750438321795645 1.5991e-09 deg/d
Q 2.874175347036831 1.114e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2267  
   data-arc span      11640 days (31.87 yr)  
   first obs. used      1989-05-02  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44136  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:20:33  

Additional Information
 Earth MOID = .796747 au 
 Jupiter MOID = 2.30274 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 14.11   n/a E2021B10  
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 22.6622 h n/a LCDB (Rev. 2020-October); 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:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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