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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 ]

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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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .118110865699012 3.3673e-08  
a 2.719074977323491 1.0146e-08 au
q 2.397922677851291 9.1418e-08 au
i 13.05321967448991 4.0955e-06 deg
node 292.87157411849 1.73e-05 deg
peri 165.9912035995433 2.7944e-05 deg
M 45.82281007004007 2.0208e-05 deg
tp 2458792.046390496608
(2019-Nov-04.54639050)
9.1819e-05 TDB
period 1637.684360835088
4.48
9.1667e-06
2.51e-08
d
yr
n .219822579130223 1.2304e-09 deg/d
Q 3.040227276795689 1.1345e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2410  
   data-arc span      13316 days (36.46 yr)  
   first obs. used      1984-01-05  
   last obs. used      2020-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41773  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:57:30  

Additional Information
 Earth MOID = 1.41669 au 
 Jupiter MOID = 2.11107 au 
 T_jup = 3.312 
[ 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 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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