Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
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 ]  
21392 Helibrochier (1998 FH32)
Classification: Main-belt Asteroid          SPK-ID: 2021392
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1064173962192031 3.3395e-08  
a 2.280430120569014 6.2908e-09 au
q 2.037752684878216 7.8146e-08 au
i 6.330767651736951 3.893e-06 deg
node 197.7917503315923 2.6102e-05 deg
peri 201.6258578284572 3.1144e-05 deg
M 346.0297454796644 1.6467e-05 deg
tp 2459249.311864561952
(2021-Feb-03.81186456)
5.7556e-05 TDB
period 1257.834724251003
3.44
5.2048e-06
1.425e-08
d
yr
n .2862061231568938 1.1843e-09 deg/d
Q 2.523107556259812 6.9602e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1688  
   data-arc span      12456 days (34.10 yr)  
   first obs. used      1986-12-05  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50401  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:52:22  

Additional Information
 Earth MOID = 1.04519 au 
 Jupiter MOID = 2.84866 au 
 T_jup = 3.590 
[ 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 15.08   n/a E2021B10  
rotation period rot_per 13.736 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]

21392 Helibrochier           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Helio Brochier (b. 1954), a 2003 Intel International Science and Engineering Fair Excellence in Teaching Award finalist, is a teacher at the Fundacao Escola Tecnica Liberato Salzano Viera Da Cunha, Montenegro, Rio Grande Do Sul, Brasil.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

[ show close-approach data ]
Alternate Designations
 1998 FH32 = 1986 XZ4 = 2000 WL143 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-10 13:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin