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1523 Pieksamaki (1939 BC)
Classification: Main-belt Asteroid          SPK-ID: 2001523
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09285077110746069 6.9818e-08  
a 2.242436140194842 7.652e-09 AU
q 2.034224215418514 1.564e-07 AU
i 5.142581173468452 7.1092e-06 deg
node 327.8068019729207 6.1802e-05 deg
peri 187.7749755052497 6.9601e-05 deg
M 138.563710537446 2.9707e-05 deg
tp 2456328.409178476135
(2013-Feb-04.90917848)
0.00010131 JED
period 1226.531067112719
3.36
6.2781e-06
1.719e-08
d
yr
n .2935107064572346 1.5024e-09 deg/d
Q 2.450648064971171 8.3625e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1260  
   data-arc span      28252 days (77.35 yr)  
   first obs. used      1936-03-20  
   last obs. used      2013-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54345  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-26 18:09:22  

Additional Information
 Earth MOID = 1.04442 AU 
 T_jup = 3.622 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.3 mag n/a PDS3 (MPC 17262)  
rotation period rot_per 5.3202 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Lagerkvist, C.-I. (1979) Icarus 38, 106-114.]
[Pray, D.P.; Galad, A.; Gajdos, S.; Vilagi, J.; et al. (2006) Minor Planet Bul. 33, 92-95.]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]

1523 Pieksamaki (1939 BC)          Discovered 1939-Jan-18 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1939 BC = 1936 FO1 = 1936 HC = 1946 GB = 1949 AC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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