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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2031738475760083 4.3761e-08  
a 2.606657064895442 7.9213e-09 au
q 2.07705251970945 1.1308e-07 au
i 12.26532257125475 5.6073e-06 deg
node 358.2308392508415 1.419e-05 deg
peri 44.13811852270442 1.9049e-05 deg
M 165.4386345367599 1.0943e-05 deg
tp 2458494.086954388866
(2019-Jan-10.58695439)
4.6614e-05 TDB
period 1537.178405347039
4.21
7.0069e-06
1.918e-08
d
yr
n .2341953274569487 1.0675e-09 deg/d
Q 3.136261610081434 9.5307e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2702  
   data-arc span      30988 days (84.84 yr)  
   first obs. used      1936-03-16  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39266  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:04:31  

Additional Information
 Earth MOID = 1.10094 au 
 Jupiter MOID = 2.3927 au 
 T_jup = 3.351 
[ 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 11.97   n/a E2021B10 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. 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:
[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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