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1512 Oulu (1939 FE)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001512
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1434989350069415 2.9817e-08  
a 3.958362434367033 2.4055e-08 au
q 3.39034164066388 1.146e-07 au
i 6.470071409039814 4.2589e-06 deg
node 10.05185434735491 2.895e-05 deg
peri 237.859778871258 3.2364e-05 deg
M 99.21487558190799 1.5419e-05 deg
tp 2458207.732107207085
(2018-Mar-30.23210721)
0.00012035 TDB
period 2876.548901881525
7.88
2.6221e-05
7.179e-08
d
yr
n .1251499669498152 1.1408e-09 deg/d
Q 4.526383228070187 2.7506e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3296  
   data-arc span      29798 days (81.58 yr)  
   first obs. used      1939-04-12  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41689  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:01:05  

Additional Information
 Earth MOID = 2.38332 au 
 Jupiter MOID = .647088 au 
 T_jup = 3.030 
[ 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 9.5   n/a MPO492768 IRAS observations used: 38
diameter diameter 79.872 km 0.771 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 132.3 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Galad, A.; Kornos, L.; Vilagi, J. (2010) Minor Planet Bull. 37, 9-15.]
geometric albedo albedo 0.039   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
B-V BV 0.715   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=1.56, mean=2.42, max.=3.29) deg.
U-B UB 0.190   0.042 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=1.56, mean=2.42, max.=3.29) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

1512 Oulu (1939 FE)          Discovered 1939-Mar-18 by Alikoski, H. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1939 FE = 1938 CU = 1957 TA = 1958 XS 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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