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3228 Pire (1935 CL)
Classification: Main-belt Asteroid          SPK-ID: 2003228
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .132940947852183 3.9286e-08  
a 2.462982475190536 7.3656e-09 au
q 2.13555125039539 9.566e-08 au
i 1.921057721672211 3.7995e-06 deg
node 290.3191396072402 9.9663e-05 deg
peri 189.2394968162118 0.00010062 deg
M 48.42757791540492 1.2463e-05 deg
tp 2458810.575646290768
(2019-Nov-23.07564629)
4.8895e-05 TDB
period 1411.856018377787
3.87
6.3333e-06
1.734e-08
d
yr
n .2549835077472258 1.1438e-09 deg/d
Q 2.790413699985682 8.3448e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2932  
   data-arc span      38105 days (104.33 yr)  
   first obs. used      1916-04-03  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41395  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:01:19  

Additional Information
 Earth MOID = 1.15161 au 
 Jupiter MOID = 2.28314 au 
 T_jup = 3.476 
[ 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 12.8   n/a MPO347546  
diameter diameter 16.209 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.538 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Black, S.; Linville, D.; Michalik, D.; Wolf, M.; Ditteon, R. (2016) Minor Planet Bull. 43, 287-289.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.048   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3228 Pire (1935 CL)          Discovered 1935-Feb-08 by Arend, S. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1935 CL = 1943 GB = 1958 BA = 1962 EC = 1970 ER1 = 1972 TB4 = 1972 VD = 1972 XJ1 = 1978 JU2 = 1979 QE7 = A916 GD = A918 WB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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