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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09294521304388087 6.0358e-08  
a 2.242262067916222 8.0415e-09 AU
q 2.033854542313536 1.3408e-07 AU
i 5.142752801292803 6.3511e-06 deg
node 327.8062791025961 4.9419e-05 deg
peri 187.8066493125134 5.4668e-05 deg
M 197.2297238008286 2.3772e-05 deg
tp 2457554.998762998840
(2016-Jun-15.49876300)
8.1757e-05 JED
period 1226.388253069748
3.36
6.5974e-06
1.806e-08
d
yr
n .2935448860496593 1.5791e-09 deg/d
Q 2.450669593518908 8.789e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1325  
   data-arc span      28677 days (78.51 yr)  
   first obs. used      1936-03-20  
   last obs. used      2014-09-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49574  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 13:51:00  

Additional Information
 Earth MOID = 1.04447 AU 
 T_jup = 3.623 
[ 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. 2014-Mar-01) 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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