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43089 (1999 WP12)
Classification: Main-belt Asteroid          SPK-ID: 2043089
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08502216176464956 5.3219e-08  
a 3.169079624409699 2.2061e-08 au
q 2.899637623938083 1.7527e-07 au
i 19.19007776685321 5.4355e-06 deg
node 205.7333329776828 1.3655e-05 deg
peri 57.60318958221475 3.0358e-05 deg
M 17.72795172881641 2.5415e-05 deg
tp 2459099.026132435096
(2020-Sep-06.52613244)
0.0001457 TDB
period 2060.621152526356
5.64
2.1517e-05
5.891e-08
d
yr
n .174704602812911 1.8243e-09 deg/d
Q 3.438521624881315 2.3937e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1028  
   data-arc span      8149 days (22.31 yr)  
   first obs. used      1998-06-25  
   last obs. used      2020-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5306  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:15:39  

Additional Information
 Earth MOID = 1.93066 au 
 Jupiter MOID = 1.63973 au 
 T_jup = 3.111 
[ 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 13.88   n/a E2021B10  
diameter diameter 9.100 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 36.2149 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.059   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43089 (1999 WP12)          Discovered 1999-Nov-29 by Spacewatch at Kitt Peak
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

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