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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.

JPL Small-Body Database Browser
Search: [ help ]  
6244 Okamoto (1990 QF)
Classification: Main-belt Asteroid          SPK-ID: 2006244
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 64 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1522639658419583 4.2059e-08  
a 2.159721872091465 6.5865e-09 au
q 1.8308740547312 8.8833e-08 au
i 5.396349069475184 4.2534e-06 deg
node 331.2782449153023 4.4791e-05 deg
peri 51.82569918026395 4.7282e-05 deg
M 96.64110972144373 1.5932e-05 deg
tp 2458689.289261491902
5.0668e-05 TDB
period 1159.298213626117
n .3105326962197 1.4205e-09 deg/d
Q 2.488569689451731 7.5893e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2116  
   data-arc span      31541 days (86.35 yr)  
   first obs. used      1933-09-25  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43728  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:58:02  

Additional Information
 Earth MOID = .839207 au 
 Jupiter MOID = 2.98699 au 
 T_jup = 3.677 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO452255  
rotation period rot_per 2.8958 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Higgins, D.; Pray, D.; Kusnirak, P.; Pravec, P. (2006) CBET 681.]
[Higgins, D.; Oey, J.; Pravec, P. (2011) Minor Planet Bull. 38, 46-49.]
[Pravec, P.; Scheirich, P.; Vokrouhlicky, D.; Harris, A.W.; et al. (2012) Icarus 218, 125-143. See also supplemental on-line material.]
[Aznar Macias, A. (2017) Minor Planet Bull. 44, 139-141.]

6244 Okamoto           Discovered 1990 Aug. 20 by T. Seki at Geisei.
Named in honor of Hiroshi Okamoto (b. 1915), an entomologist and elementary-school teacher who inspired the discoverer with a love of the stars.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980610/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 1990 QF = 1952 SG1 = 1987 SL25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Apr-07 12:00 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin