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4122 Ferrari (1986 OA)
Classification: Main-belt Asteroid          SPK-ID: 2004122
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05041677402470833 2.7241e-08  
a 2.557755575732735 1.0388e-08 au
q 2.42880179086058 6.971e-08 au
i 13.46629009116692 3.4193e-07 deg
node 262.4964491572555 3.3545e-06 deg
peri 311.0069993945795 2.0252e-05 deg
M 237.2848500865577 2.3188e-05 deg
tp 2459709.810545440025
(2022-May-10.31054544)
9.7136e-05 TDB
period 1494.125187376921
4.09
9.1022e-06
2.492e-08
d
yr
n .2409436659266914 1.4678e-09 deg/d
Q 2.68670936060489 1.0912e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2648  
   data-arc span      24258 days (66.41 yr)  
   first obs. used      1954-10-24  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37667  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:25:15  

Additional Information
 Earth MOID = 1.43413 au 
 Jupiter MOID = 2.37847 au 
 T_jup = 3.396 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457319.5 (2015-Oct-24.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05012811769980562 2.7092e-08  
q 2.42971582601048 6.9248e-08 au
tp 2456726.936973638859
(2014-Mar-10.43697364)
9.4981e-05 TDB
node 262.5290441733812 3.3605e-06 deg
peri 312.2413858708061 2.066e-05 deg
i 13.4577816751407 3.4198e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2648  
   data-arc span      24258 days (66.41 yr)  
   first obs. used      1954-10-24  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37667  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:25:15  

Additional Information
 Jupiter MOID = 2.37847 au 
 T_jup = 3.396 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.339881383620901E-16 -1.856890392695254E-15 -1.058236346916343E-12 -6.137318364748968E-14 -2.339238931229787E-13 9.582622158687849E-16
q -1.856890392695254E-15 4.795226173845971E-15 2.810417859082164E-12 1.539517875123546E-13 6.304461932323533E-13 -2.417344230144352E-15
tp -1.058236346916343E-12 2.810417859082164E-12 9.021354377605381E-9 2.026671766018826E-10 1.945289901360607E-9 -1.896965242116831E-12
node -6.137318364748968E-14 1.539517875123546E-13 2.026671766018826E-10 1.12932869421694E-11 3.889677839879822E-11 -4.365754903924677E-13
peri -2.339238931229787E-13 6.304461932323533E-13 1.945289901360607E-9 3.889677839879822E-11 4.268158407825033E-10 1.688413489791628E-13
i 9.582622158687849E-16 -2.417344230144352E-15 -1.896965242116831E-12 -4.365754903924677E-13 1.688413489791628E-13 1.16947081996031E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.11   n/a MPCxxxxx  
diameter diameter 8.889 km 0.727 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 8.45 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:
[Kim, M.-J.; Choi, Y.-J.; Moon, H.-K.; Byun, Y.-I.; et al. (2014) Astron. J. 147, A56.]
geometric albedo albedo 0.246   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4122 Ferrari (1986 OA)          Discovered 1986-Jul-28 by Oss. San Vittore at Bologna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1986 OA = 1954 UN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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