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102224 Raffaellolena (1999 TG12)
Classification: Main-belt Asteroid          SPK-ID: 2102224
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1931737097498218 3.9173e-08  
a 2.381604478965381 9.7074e-09 au
q 1.921541106606847 9.6633e-08 au
i 2.858081166528004 3.9986e-06 deg
node 151.1716130793571 7.601e-05 deg
peri 237.1681339004149 7.6787e-05 deg
M 277.5246917572399 1.3976e-05 deg
tp 2459508.056090014560
(2021-Oct-20.55609001)
5.3446e-05 TDB
period 1342.464729920679
3.68
8.2078e-06
2.247e-08
d
yr
n .2681634697555675 1.6396e-09 deg/d
Q 2.841667851323916 1.1583e-08 au
  Orbit Determination Parameters
   # obs. used (total)      696  
   data-arc span      8535 days (23.37 yr)  
   first obs. used      1997-02-10  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53964  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:56:02  

Additional Information
 Earth MOID = .926824 au 
 Jupiter MOID = 2.60637 au 
 T_jup = 3.511 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.25   n/a E2021B55  
diameter diameter 1.540 km 0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.247   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102224 Raffaellolena           Discovered 1999 Oct. 10 by S. Sposetti at Gnosca.
Raffaello Lena (b. 1959) is an Italian lunar observer. He founded Selenology Today, a journal that has produced high quality amateur lunar studies. He is the Lunar Domes Coordinator of the British Astronomical Association.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-10-26Last Updated: 2019-04-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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