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21586 Pourkaviani (1998 SU129)
Classification: Main-belt Asteroid          SPK-ID: 2021586
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1407125091687548 1.8257e-08  
a 3.092534749955807 1.1935e-08 au
q 2.657376425597958 5.6062e-08 au
i 1.804526225031115 2.4513e-07 deg
node 125.4663485524553 8.1435e-06 deg
peri 143.2557553019085 8.9698e-06 deg
M 126.1108202384854 7.4798e-06 deg
tp 2458504.642745776070
(2019-Jan-21.14274578)
3.9317e-05 TDB
period 1986.416479148128
5.44
1.15e-05
3.149e-08
d
yr
n .1812308766963036 1.0492e-09 deg/d
Q 3.527693074313656 1.3615e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3102  
   data-arc span      13123 days (35.93 yr)  
   first obs. used      1985-03-22  
   last obs. used      2021-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46459  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 03:01:28  

Additional Information
 Earth MOID = 1.6398 au 
 Jupiter MOID = 1.56342 au 
 T_jup = 3.208 
[ 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 12.65   n/a E2021B10  
diameter diameter 17.113 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 27.0489 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.060   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21586 Pourkaviani           Discovered 1998 Sept. 26 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Shahin Pourkaviani (b. 1989) was awarded second place in the 2006 Intel International Science and Engineering Fair for his behavioral and social sciences team project. He attends the Lake Brantley High School, Altamonte Springs, Florida, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060711/MPCPages.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1998 SU129 = 1985 FO1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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