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42929 Francini (1999 TW9)
Classification: Main-belt Asteroid          SPK-ID: 2042929
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2119111191699178 5.6601e-08  
a 2.392368526205404 1.1236e-08 au
q 1.88539903435033 1.3465e-07 au
i 1.885304745994928 6.0183e-06 deg
node 330.0333337308546 0.00015814 deg
peri 24.75834455333258 0.00015846 deg
M 216.1546306691273 1.5135e-05 deg
tp 2458140.549952362117
(2018-Jan-22.04995236)
5.914e-05 JED
period 1351.576236028583
3.70
9.5217e-06
2.607e-08
d
yr
n .2663556745106806 1.8765e-09 deg/d
Q 2.899338018060478 1.3617e-08 au
  Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      23505 days (64.35 yr)  
   first obs. used      1951-11-28  
   last obs. used      2016-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56315  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 14:21:14  

Additional Information
 Earth MOID = .879786 au 
 Jupiter MOID = 2.53389 au 
 T_jup = 3.500 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7 mag n/a MPO365755  
rotation period rot_per 3.5297 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

42929 Francini           Discovered 1999 Oct. 8 by L. Tesi and G. Forti at San Marcello Pistoiese.
Claudio Francini (b. 1926) is an amateur astronomer passionately fond of imaging the sky and a collaborator at the San Marcello Observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070730/MPCPages.arcLast Updated: 2007-08-07

[ show close-approach data ]
Alternate Designations
 1999 TW9 = 1528 T-2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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