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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .146794673408906 3.3755e-08  
a 2.782338703912898 1.1417e-08 au
q 2.373906202559045 9.5278e-08 au
i 14.7060873312949 3.7542e-06 deg
node 74.72638098187811 1.7027e-05 deg
peri 350.9526436471344 2.3178e-05 deg
M 108.4897738481297 1.5255e-05 deg
tp 2458885.642556602490
(2020-Feb-06.14255660)
7.1153e-05 TDB
period 1695.170642355193
4.64
1.0434e-05
2.857e-08
d
yr
n .2123680006042532 1.3071e-09 deg/d
Q 3.190771205266751 1.3093e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1627  
   data-arc span      24307 days (66.55 yr)  
   first obs. used      1954-11-24  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47325  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:06:56  

Additional Information
 Earth MOID = 1.38877 au 
 Jupiter MOID = 2.12367 au 
 T_jup = 3.269 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457398.5 (2016-Jan-11.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1439813613683435 3.3553e-08  
q 2.382880350343656 9.4289e-08 au
tp 2457188.376610214703
(2015-Jun-14.87661021)
7.2246e-05 TDB
node 74.86055454194418 1.7059e-05 deg
peri 350.6903999271121 2.3491e-05 deg
i 14.68666127627576 3.7493e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1627  
   data-arc span      24307 days (66.55 yr)  
   first obs. used      1954-11-24  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47325  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:06:56  

Additional Information
 Jupiter MOID = 2.12367 au 
 T_jup = 3.269 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.125789305411391E-15 -3.146807746322558E-15 -5.287995341356516E-13 2.65882410613774E-15 -1.43395979914784E-13 -5.6900892808391E-16
q -3.146807746322558E-15 8.890392891052639E-15 1.49295674851935E-12 -6.719349708023128E-15 4.052785928801437E-13 1.873039017618642E-15
tp -5.287995341356516E-13 1.49295674851935E-12 5.219528358849498E-9 1.108843852725701E-11 1.190096575352201E-9 -4.225595640012411E-12
node 2.65882410613774E-15 -6.719349708023128E-15 1.108843852725701E-11 2.90997423317033E-10 -2.787772089443669E-10 -5.555623981957461E-12
peri -1.43395979914784E-13 4.052785928801437E-13 1.190096575352201E-9 -2.787772089443669E-10 5.518483708168849E-10 4.419063269070755E-12
i -5.6900892808391E-16 1.873039017618642E-15 -4.225595640012411E-12 -5.555623981957461E-12 4.419063269070755E-12 1.405695802345942E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.11   n/a MPO636384  
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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