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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09276108348368658 2.8563e-08  
a 2.241996831858109 4.8882e-09 au
q 2.034026776567958 6.2815e-08 au
i 5.140778380810563 2.9623e-06 deg
node 327.7712600207758 3.961e-05 deg
peri 187.6171192603728 4.4098e-05 deg
M 64.59685283245884 1.9322e-05 deg
tp 2458780.481207145310
(2019-Oct-23.98120715)
6.5771e-05 TDB
period 1226.17065622566
3.36
4.0101e-06
1.098e-08
d
yr
n .293596978668642 9.602e-10 deg/d
Q 2.44996688714826 5.3417e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2741  
   data-arc span      30876 days (84.53 yr)  
   first obs. used      1936-03-20  
   last obs. used      2020-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41933  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:18:08  

Additional Information
 Earth MOID = 1.04398 au 
 Jupiter MOID = 2.53754 au 
 T_jup = 3.623 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.3   n/a MPO425815  
diameter diameter 9.111 km 0.313 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.3202 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 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 Bull. 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]
[Stephens, R.D.; Warner, B.D. (2019) Minor Planet Bull. 45, 66-71.]
geometric albedo albedo 0.281   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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