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3759 Piironen (1984 AP)
Classification: Main-belt Asteroid          SPK-ID: 2003759
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .118110861651272 3.3891e-08  
a 2.719074980493109 1.0847e-08 au
q 2.397922691652652 9.2381e-08 au
i 13.05321979382673 4.1258e-06 deg
node 292.8715762559965 1.8784e-05 deg
peri 165.9912055900991 2.9568e-05 deg
M 45.82280483158792 2.1545e-05 deg
tp 2458792.046413962481
(2019-Nov-04.54641396)
9.7759e-05 TDB
period 1637.684363698655
4.48
9.7997e-06
2.683e-08
d
yr
n .2198225787458531 1.3154e-09 deg/d
Q 3.040227269333566 1.2128e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2057  
   data-arc span      13151 days (36.01 yr)  
   first obs. used      1984-01-05  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44443  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:14:27  

Additional Information
 Earth MOID = 1.4167 au 
 Jupiter MOID = 2.11107 au 
 T_jup = 3.312 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456883.5 (2014-Aug-14.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1170709241216787 3.4207e-08  
q 2.400481771031091 9.312e-08 au
tp 2457157.358080333831
(2015-May-14.85808033)
9.6938e-05 TDB
node 292.9559557099053 1.8765e-05 deg
peri 166.6111011212946 2.9631e-05 deg
i 13.05958996364077 4.1281e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2057  
   data-arc span      13151 days (36.01 yr)  
   first obs. used      1984-01-05  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44443  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:14:27  

Additional Information
 Jupiter MOID = 2.11107 au 
 T_jup = 3.312 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.17010685512928E-15 -3.168624826090335E-15 8.339388246693836E-13 -1.056832169081421E-14 2.084633571423913E-13 -1.323852538939498E-15
q -3.168624826090335E-15 8.67126597264052E-15 -2.195292265907323E-12 2.629817213991184E-14 -5.53666284548023E-13 3.909425658513124E-15
tp 8.339388246693836E-13 -2.195292265907323E-12 9.39695521627347E-9 -1.110626970941788E-11 2.242978221758747E-9 -3.634679896656112E-12
node -1.056832169081421E-14 2.629817213991184E-14 -1.110626970941788E-11 3.52122829956688E-10 -3.452452487677775E-10 1.43131581197233E-11
peri 2.084633571423913E-13 -5.53666284548023E-13 2.242978221758747E-9 -3.452452487677775E-10 8.779938684109804E-10 -1.485834009238706E-11
i -1.323852538939498E-15 3.909425658513124E-15 -3.634679896656112E-12 1.43131581197233E-11 -1.485834009238706E-11 1.704081120419995E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.9   n/a MPO458867  
diameter diameter 32.15 km 1.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 8.213 h n/a LCDB (Rev. 2019-August); 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:
[Klinglesmith, D.A. III; DeHart, A.; Hanowell, J.; Hendrickx, S. (2015) Minor Planet Bull. 42, 158-159.]
geometric albedo albedo 0.0297   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3759 Piironen (1984 AP)          Discovered 1984-Jan-08 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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