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14421 (1991 SA1)
Classification: Main-belt Asteroid          SPK-ID: 2014421
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .160032650574268 4.797e-08  
a 3.040344796747322 2.0171e-08 au
q 2.553790360264165 1.4162e-07 au
i 15.41013034786136 4.3212e-06 deg
node 143.0409103408921 1.3732e-05 deg
peri 201.954954671339 1.8669e-05 deg
M 187.2131888789582 1.5591e-05 deg
tp 2460129.874545308966
(2023-Jul-04.37454531)
8.8243e-05 TDB
period 1936.344759999356
5.30
1.927e-05
5.276e-08
d
yr
n .1859173053460375 1.8502e-09 deg/d
Q 3.52689923323048 2.3399e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1234  
   data-arc span      10813 days (29.60 yr)  
   first obs. used      1991-08-07  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51824  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:28:40  

Additional Information
 Earth MOID = 1.54951 au 
 Jupiter MOID = 1.88318 au 
 T_jup = 3.166 
[ show covariance matrix ]

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 13.90   n/a E2021B10  
diameter diameter 5.488 km 0.533 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 34.1469 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 0.233   0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14421 (1991 SA1)          Discovered 1991-Sep-30 by McNaught, R. H. at Siding Spring
Reference: 20000418/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1991 SA1 = 1999 CV62 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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