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18392 (1992 PT4)
Classification: Main-belt Asteroid          SPK-ID: 2018392
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1754302213119049 4.1683e-08  
a 2.41183711607197 1.3501e-08 au
q 1.988727997031198 1.0002e-07 au
i 9.617220698265523 4.2205e-06 deg
node 134.9001831941619 3.8912e-05 deg
peri 153.6907681886498 4.3143e-05 deg
M 115.1526720110868 2.0089e-05 deg
tp 2456962.885294645095
(2014-Nov-01.38529465)
7.5936e-05 JED
period 1368.108018480006
3.75
1.1488e-05
3.145e-08
d
yr
n .2631371171992449 2.2095e-09 deg/d
Q 2.834946235112743 1.587e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1127  
   data-arc span      8534 days (23.36 yr)  
   first obs. used      1992-08-02  
   last obs. used      2015-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47412  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:39:37  

Additional Information
 Earth MOID = .975713 au 
 Jupiter MOID = 2.36375 au 
 T_jup = 3.479 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO358808  
rotation period rot_per 14.763 h n/a LCDB (Rev. 2015-December); 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:
[Pravec, P.; Wolf, M.; Sarounova, L. (2014) http://www.asu.cas.cz/~ppravec/neo.htm]

18392 (1992 PT4)          Discovered 1992-Aug-02 by Holt, H. E. at Palomar
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1992 PT4 = 1999 JH9 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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