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
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 ]  
9226 Arimahiroshi (1996 AB1)
Classification: Main-belt Asteroid          SPK-ID: 2009226
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04036256038959372 3.4069e-08  
a 2.862376606681632 1.3801e-08 au
q 2.746843758036685 1.0012e-07 au
i 3.267575547982565 4.1518e-06 deg
node 114.7930907621825 8.2432e-05 deg
peri 341.7548259689984 0.00010684 deg
M 30.96418162407727 6.6666e-05 deg
tp 2458848.359200856354
(2019-Dec-30.85920086)
0.00032755 TDB
period 1768.840150747715
4.84
1.2792e-05
3.502e-08
d
yr
n .2035231956080501 1.4719e-09 deg/d
Q 2.97790945532658 1.4358e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1999  
   data-arc span      14388 days (39.39 yr)  
   first obs. used      1980-11-30  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51648  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:08:52  

Additional Information
 Earth MOID = 1.76391 au 
 Jupiter MOID = 2.08169 au 
 T_jup = 3.298 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456337.5 (2013-Feb-14.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03808195122187946 3.4469e-08  
q 2.753299179421655 1.01e-07 au
tp 2457089.705813904251
(2015-Mar-08.20581390)
0.0003455 TDB
node 114.8549985100047 8.2331e-05 deg
peri 343.7654732999967 0.00010907 deg
i 3.268942047989487 4.1549e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1999  
   data-arc span      14388 days (39.39 yr)  
   first obs. used      1980-11-30  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51648  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:08:52  

Additional Information
 Jupiter MOID = 2.08169 au 
 T_jup = 3.298 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.188103205002661E-15 -3.451675291007982E-15 1.286758471838349E-12 -4.64697108313698E-15 2.648278119212627E-13 -2.802956978765886E-16
q -3.451675291007982E-15 1.020016247609535E-14 -3.914746633659861E-12 1.363389207589552E-14 -8.213414085458736E-13 9.027941818444862E-16
tp 1.286758471838349E-12 -3.914746633659861E-12 1.193713183461179E-7 2.544705966373069E-11 2.474693745766921E-8 -2.397134454223336E-12
node -4.64697108313698E-15 1.363389207589552E-14 2.544705966373069E-11 6.778328703784576E-9 -6.761560492882214E-9 8.211865614759558E-11
peri 2.648278119212627E-13 -8.213414085458736E-13 2.474693745766921E-8 -6.761560492882214E-9 1.189655038487196E-8 -8.24850107981547E-11
i -2.802956978765886E-16 9.027941818444862E-16 -2.397134454223336E-12 8.211865614759558E-11 -8.24850107981547E-11 1.726305872191236E-11

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 13.4   n/a MPO365359  
diameter diameter 5.616 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.294   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9226 Arimahiroshi           Discovered 1996 Jan. 12 by T. Kobayashi at Oizumi.
Hiroshi Arima (b. 1958) is a registered architect who also designs individual observatories in Japan. While a university student he was a leader of the Kyushu Meteoric Network. With members of the Kumamoto Civil Astronomical Observatory, he helped carry out a solar eclipse observation in Mexico in 1991.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100527/MPCPages.arcLast Updated: 2010-12-06

[ show close-approach data ]
Alternate Designations
 1996 AB1 = 1980 WP1 = 1993 OJ11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-25 02:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin