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1533 Saimaa (1939 BD)
Classification: Main-belt Asteroid          SPK-ID: 2001533
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03998844254137004 3.5887e-08  
a 3.009809418483119 1.185e-08 au
q 2.889451827491633 1.0931e-07 au
i 10.71417252093543 4.0337e-06 deg
node 156.5507280953586 1.6459e-05 deg
peri 9.459534874429378 4.4436e-05 deg
M 176.5578478652957 4.2888e-05 deg
tp 2458065.112745790226
(2017-Nov-07.61274579)
0.00022499 TDB
period 1907.246919844836
5.22
1.1263e-05
3.084e-08
d
yr
n .1887537456499275 1.1147e-09 deg/d
Q 3.130167009474606 1.2324e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3144  
   data-arc span      30766 days (84.23 yr)  
   first obs. used      1936-08-17  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43641  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:01:12  

Additional Information
 Earth MOID = 1.8976 au 
 Jupiter MOID = 1.84302 au 
 T_jup = 3.222 
[ 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 10.7   n/a MPO492768 IRAS observations used: 5
diameter diameter 24.298 km 0.279 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.115 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Benishek, V. (2018) Minor Planet Bull. 45, 386-389.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.141   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.790   0.017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.42, mean=4.70, max.=5.35) deg.
U-B UB 0.450   0.079 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.42, mean=4.70, max.=5.35) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

1533 Saimaa (1939 BD)          Discovered 1939-Jan-19 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1939 BD = 1934 FA = 1936 QC = 1936 RP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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