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18392 (1992 PT4)
Classification: Main-belt Asteroid          SPK-ID: 2018392
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1747738805248639 2.7683e-08  
a 2.412716682822786 9.4331e-09 au
q 1.99103682555877 6.7575e-08 au
i 9.6157072313082 2.9457e-06 deg
node 134.8467896072515 2.1197e-05 deg
peri 153.69436352 2.433e-05 deg
M 228.680999352952 1.4809e-05 deg
tp 2459699.824626581131
(2022-Apr-30.32462658)
5.7903e-05 TDB
period 1368.856484465243
3.75
8.0278e-06
2.198e-08
d
yr
n .2629932385794537 1.5423e-09 deg/d
Q 2.834396540086801 1.1082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1989  
   data-arc span      10448 days (28.61 yr)  
   first obs. used      1992-08-02  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45373  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:28:25  

Additional Information
 Earth MOID = .97782 au 
 Jupiter MOID = 2.37263 au 
 T_jup = 3.479 
[ 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 14.07   n/a E2021B10  
diameter diameter 4.017 km 0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 14.763 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:
[Pravec, P.; Wolf, M.; Sarounova, L. (2014) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.209   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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