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21306 Marani (1996 XF2)
Classification: Main-belt Asteroid          SPK-ID: 2021306
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1466976955996916 3.7196e-08  
a 2.782764341754483 1.2315e-08 au
q 2.374539225422108 1.0644e-07 au
i 14.70591888033425 4.204e-06 deg
node 74.73304078271731 1.7067e-05 deg
peri 351.0071204780786 2.3376e-05 deg
M 66.818269203396 1.5232e-05 deg
tp 2458885.793442365401
(2020-Feb-06.29344237)
7.1371e-05 TDB
period 1695.559644078563
4.64
1.1256e-05
3.082e-08
d
yr
n .2123192783322222 1.4094e-09 deg/d
Q 3.190989458086858 1.4122e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1365  
   data-arc span      24161 days (66.15 yr)  
   first obs. used      1954-11-24  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49688  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:51:55  

Additional Information
 Earth MOID = 1.3891 au 
 Jupiter MOID = 2.12243 au 
 T_jup = 3.269 
[ 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 14.09   n/a E2021B10  
diameter diameter 7.944 km 0.385 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.085   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

21306 Marani           Discovered 1996 Dec. 1 by V. Goretti at Pianoro.
Giorgio "Doddo" Marani (1925-2000), was a longstanding friend of the discoverer. He was an accomplished mechanic who worked, together with the team of San Vittore Observatory in Bologna, on the construction of a number of measuring instruments.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1996 XF2 = 1998 GK5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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