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1392 Pierre (1936 FO)
Classification: Main-belt Asteroid          SPK-ID: 2001392
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2030182276854621 4.3804e-08  
a 2.60711590919093 7.9449e-09 au
q 2.077823857936415 1.1319e-07 au
i 12.26412880530361 5.6138e-06 deg
node 358.2293790168853 1.4215e-05 deg
peri 44.17728481939263 1.9113e-05 deg
M 118.5635896368573 1.0971e-05 deg
tp 2458494.106904771348
(2019-Jan-10.60690477)
4.6811e-05 TDB
period 1537.5843025728
4.21
7.0284e-06
1.924e-08
d
yr
n .2341335037029328 1.0702e-09 deg/d
Q 3.136407960445445 9.5579e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2672  
   data-arc span      30773 days (84.25 yr)  
   first obs. used      1936-03-16  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39254  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:30:40  

Additional Information
 Earth MOID = 1.1028 au 
 Jupiter MOID = 2.39147 au 
 T_jup = 3.350 
[ 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 11.9   n/a MPO502166 IRAS observations used: 4
diameter diameter 26.44 km 1.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 4
rotation period rot_per 18. 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:
[Barucci, M.A.; Di Martino, M.; Fulchignoni, M. (1992) Astron. J. 103, 1679-1686.]
geometric albedo albedo 0.0519   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 4
B-V BV 0.757   0.025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.15 deg.
U-B UB 0.258   0.073 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.15 deg.
Tholen spectral type spec_T DX   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

1392 Pierre (1936 FO)          Discovered 1936-Mar-16 by Boyer, L. at Algiers
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1936 FO = 1938 SZ = 1955 TZ = 1959 SH = A917 UB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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