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11977 Leonrisoldi (1995 OA)
Classification: Main-belt Asteroid          SPK-ID: 2011977
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0848750119888272 1.1008e-08  
a 2.32658435527161 6.2455e-09 au
q 2.129115480224914 2.7898e-08 au
i 6.151863126434468 6.7899e-07 deg
node 274.7205841698952 8.6133e-06 deg
peri 151.1181635691665 1.3644e-05 deg
M 320.4754050187883 1.2903e-05 deg
tp 2459342.812012265985
(2021-May-08.31201227)		 4.6588e-05 TDB
period 1296.213773730209
3.55		 5.2193e-06
1.429e-08		 d
yr
n .2777319662049276 1.1183e-09 deg/d
Q 2.524053230318306 6.7755e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2842  
   data-arc span      9363 days (25.63 yr)  
   first obs. used      1995-07-19  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42973  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:03:47  

Additional Information
 Earth MOID = 1.14487 au 
 Jupiter MOID = 2.69178 au 
 T_jup = 3.561 
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[ 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 13.96   n/a E2021B10  
diameter diameter 6.647 km 0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.78763 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.145   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

11977 Leonrisoldi           Discovered 1995 July 19 at Stroncone.
Leon Risoldi (b. 2009) is the first grandson of one of the discoverers at Santa Lucia observatory. He is named after the king of animals, symbol of strength and nobility.
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 2013-07-22Last Updated: 2014-08-13

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