Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
6138 (1991 JH1)
Classification: Main-belt Asteroid          SPK-ID: 2006138
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1925614921007535 4.1123e-08  
a 2.34454973582709 8.6701e-09 au
q 1.893079740391798 9.7655e-08 au
i 2.667772396923255 4.7643e-06 deg
node 147.7120403992869 9.0896e-05 deg
peri 84.24451230630295 9.1761e-05 deg
M 8.984148738295634 1.2236e-05 deg
tp 2457567.776327733192
(2016-Jun-28.27632773)
4.4542e-05 JED
period 1311.256342610998
3.59
7.2735e-06
1.991e-08
d
yr
n .2745458597997408 1.5229e-09 deg/d
Q 2.796019731262382 1.034e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1581  
   data-arc span      23808 days (65.18 yr)  
   first obs. used      1951-02-10  
   last obs. used      2016-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49446  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:54:45  

Additional Information
 Earth MOID = .884435 au 
 Jupiter MOID = 2.19731 au 
 T_jup = 3.535 
[ 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 13.9 mag n/a MPO365322  
rotation period rot_per 5.4566 h n/a LCDB (Rev. 2016-February); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

6138 (1991 JH1)          Discovered 1991-May-14 by Otomo and Muramatsu at Kiyosato
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1991 JH1 = 1951 CQ = 1980 FG11 = 1987 DT 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-May-01 21:17 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin