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 ]  
7304 Namiki (1994 AE2)
Classification: Mars-crossing Asteroid          SPK-ID: 2007304
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 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4235089455054996 3.4971e-08  
a 2.62111795435318 1.1756e-08 au
q 1.511051053459533 8.9965e-08 au
i 9.604830410470433 4.3784e-06 deg
node 109.4079927875209 2.587e-05 deg
peri 114.8649953319048 2.6407e-05 deg
M 28.61566809196943 8.8976e-06 deg
tp 2458877.294622444215
(2020-Jan-28.79462244)
3.762e-05 TDB
period 1549.987782131497
4.24
1.0428e-05
2.855e-08
d
yr
n .2322598953037803 1.5625e-09 deg/d
Q 3.731184855246828 1.6734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1648  
   data-arc span      13816 days (37.83 yr)  
   first obs. used      1982-08-20  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50205  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:39:29  

Additional Information
 Earth MOID = .533706 au 
 Jupiter MOID = 1.38232 au 
 T_jup = 3.253 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456548.5 (2013-Sep-13.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4242625882111651 3.4904e-08  
q 1.507666521329605 8.9654e-08 au
tp 2455778.707311344738
(2011-Aug-05.20731134)
2.3655e-05 TDB
node 109.4543287750668 2.5883e-05 deg
peri 114.8400532685794 2.6418e-05 deg
i 9.605756690518152 4.3795e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1648  
   data-arc span      13816 days (37.83 yr)  
   first obs. used      1982-08-20  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50205  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:39:29  

Additional Information
 Jupiter MOID = 1.38232 au 
 T_jup = 3.253 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.218314864779026E-15 -3.121496543324772E-15 6.89120641103993E-14 -1.179060677808031E-14 2.755277522646846E-14 -1.796076589609803E-15
q -3.121496543324772E-15 8.03775306810199E-15 -1.125504956367265E-13 2.6363553686507E-14 -4.969050059509979E-14 4.340297513792598E-15
tp 6.89120641103993E-14 -1.125504956367265E-13 5.595624630237656E-10 -1.31122950233638E-11 1.441008913114984E-10 -1.027816898358913E-13
node -1.179060677808031E-14 2.6363553686507E-14 -1.31122950233638E-11 6.699504946969841E-10 -6.631882937446814E-10 1.943632674045414E-12
peri 2.755277522646846E-14 -4.969050059509979E-14 1.441008913114984E-10 -6.631882937446814E-10 6.978975887567077E-10 -2.03615408846671E-12
i -1.796076589609803E-15 4.340297513792598E-15 -1.027816898358913E-13 1.943632674045414E-12 -2.03615408846671E-12 1.917984599541905E-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 13.8   n/a MPO337316  
rotation period rot_per 8.8712 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Brinsfield, J.W. (2007) Minor Planet Bull. 34, 108-110.]
[Montigiani, N.; Mannucci, M.; Benedetti, W.; Riccetti, S. (2007) Minor Planet Bull. 34, 108.]
[Wagner, R. (2007) Minor Planet Bull. 34, 112.]
[Vander Haagen, G.A. (2008) Minor Planet Bull. 35, 5-6.]
[Sheridan, E. (2011) Posting on CALL site. http://www.minorplanet.info/call.html]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
SMASSII spectral type spec_B Ld   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

7304 Namiki           Discovered 1994 Jan. 9 by T. Kobayashi at Oizumi.
Namiki Mitsuo (b. 1957) is a Japanese amateur astronomer on the staff of the public-information office of the National Astronomical Observatory. He acts as a bridge between Japanese professionals and amateurs and helps create friendly relationships.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-03 10:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin