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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2128139960912303 5.1726e-08  
a 2.390609893848226 1.0195e-08 au
q 1.881854649243153 1.217e-07 au
i 1.885190222381608 5.0997e-06 deg
node 329.9746470428761 0.00013579 deg
peri 24.87228242240003 0.00013633 deg
M 229.2605204798083 1.7063e-05 deg
tp 2459490.804350318727
(2021-Oct-03.30435032)
6.6306e-05 TDB
period 1350.086192499192
3.70
8.6367e-06
2.365e-08
d
yr
n .266649642074771 1.7058e-09 deg/d
Q 2.899365138453299 1.2365e-08 au
  Orbit Determination Parameters
   # obs. used (total)      779  
   data-arc span      24597 days (67.34 yr)  
   first obs. used      1951-11-28  
   last obs. used      2019-04-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55603  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:22:16  

Additional Information
 Earth MOID = .877269 au 
 Jupiter MOID = 2.5441 au 
 T_jup = 3.500 
[ 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 15.6   n/a MPO452760  
rotation period rot_per 3.530 h n/a LCDB (Rev. 2019-August); 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. (2015) 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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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