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13921 Sgarbini (1985 RP)
Classification: Main-belt Asteroid          SPK-ID: 2013921
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2292264735747407 3.517e-08  
a 2.293279933050653 5.0364e-09 au
q 1.767599461077734 8.0017e-08 au
i 8.012220277180871 2.6745e-06 deg
node 166.6888649117248 2.7336e-05 deg
peri 226.3830362489674 2.8142e-05 deg
M 31.4235016262814 6.9946e-06 deg
tp 2459089.777441993720
(2020-Aug-28.27744199)
2.4591e-05 TDB
period 1268.481194626743
3.47
4.1787e-06
1.144e-08
d
yr
n .283803970862912 9.3493e-10 deg/d
Q 2.818960405023571 6.1909e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2007  
   data-arc span      15540 days (42.55 yr)  
   first obs. used      1978-09-01  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48102  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 01:37:43  

Additional Information
 Earth MOID = .78227 au 
 Jupiter MOID = 2.64414 au 
 T_jup = 3.549 
[ 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 14.74   n/a MPCxxxxx  
diameter diameter 4.377 km 0.920 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 3.679 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2006) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2013) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.133   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

13921 Sgarbini           Discovered 1985 Sept. 14 by E. Bowell at the Lowell Observatory's Anderson Mesa Station.
Bruno Sgarbini (b. 1957) directs the "G. C. Gloriosi" amateur astronomical observatory in Montecorvino Rovella, Campania. An ardent popularizer of astronomy, he is also the principal organizer of an annual international astronomy meeting. The citation is endorsed by A. W. Harris and V. Zappalà.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050721/MPCPages.arcLast Updated: 2005-07-21

Alternate Designations
 1985 RP = 1978 RT3 = 1978 SJ4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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