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JPL Small-Body Database Browser
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8932 Nagatomo (1997 AR4)
Classification: Main-belt Asteroid          SPK-ID: 2008932
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06751135873388835 3.4982e-08  
a 2.930918712254733 1.3645e-08 au
q 2.733048407651837 1.0191e-07 au
i 1.31664545100102 3.1896e-06 deg
node 216.2562966487078 0.00016732 deg
peri 274.4705190249715 0.00016917 deg
M 229.9846218094806 2.6575e-05 deg
tp 2459662.405988253616
(2022-Mar-23.90598825)
0.00013723 TDB
period 1832.753625668238
5.02
1.2799e-05
3.504e-08
d
yr
n .1964257470060881 1.3717e-09 deg/d
Q 3.128789016857628 1.4566e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2423  
   data-arc span      11101 days (30.39 yr)  
   first obs. used      1989-07-29  
   last obs. used      2019-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47859  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:07:17  

Additional Information
 Earth MOID = 1.74805 au 
 Jupiter MOID = 1.89647 au 
 T_jup = 3.273 
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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 12.9   n/a MPO435784  
diameter diameter 7.360 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.206   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8932 Nagatomo           Discovered 1997 Jan. 6 by T. Kobayashi at Oizumi.
Makoto Nagatomo (b. 1937) is a pioneer in the field of electric propulsion. Today's electric propulsion technology, applied to Japan's sample return mission Hayabusa, is inherited from his work in the new realm.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20031110/MPCPages.arcLast Updated: 2004-03-31

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1914-Feb-21 10:51 00:02 Jupiter 1.98540999856299 1.98540945360153 1.98541054352467 3.00333424569647 2.8577560494957 2420184.952378052 2.08591695238698 53.8128958978848 12.4408948909837 -72.1542633697217 3752396.36549671 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 19:07:34 2020-Feb-22 19:07
1975-Apr-16 14:40 < 00:01 Jupiter 1.93143074486909 1.93143038180166 1.93143110793652 3.12719606501168 2.98366584840115 2442519.111265748 0.810968594279697 51.4504417116227 10.6264680966713 84.5075782744993 4078552.88899075 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 19:07:34 2020-Feb-22 19:07
2010-Jan-26 14:08 < 00:01 Jupiter 1.90361067532449 1.90361035901385 1.90361099163514 2.85630049233062 2.69602318284225 2455223.088633423 0.151948014812287 31.7547764233986 8.02690357309955 -84.6438447803473 3911683.35951363 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 19:07:34 2020-Feb-22 19:07
2044-Nov-08 04:41 < 00:01 Jupiter 1.96922613217399 1.96922574941436 1.96922651493363 2.96610850472791 2.81736408607416 2467927.695220875 0.659446247715504 35.2828404558765 10.8635591362806 -79.5724326356479 3795249.25425473 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 19:07:34 2020-Feb-22 19:07
2106-Jan-02 15:03 00:02 Jupiter 1.94320996136621 1.94320961950632 1.94321030322666 3.20815107953239 3.06927625329574 2490262.126846748 1.93153418797501 101.138085985326 9.53719070341861 86.9224181624257 4610658.60856095 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 19:07:34 2020-Feb-22 19:07
2140-Oct-16 14:15 00:03 Jupiter 1.89767253395108 1.89767221638257 1.89767285152023 2.87337664610198 2.71359487861932 2502968.093984142 2.67355370045753 137.165325380511 7.3677428555646 -86.4550516403152 4146047.46505735 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 19:07:34 2020-Feb-22 19:07
2175-Jul-29 14:21 00:03 Jupiter 1.94732446404781 1.94732366132642 1.94732526677131 2.91820598385474 2.76513860617427 2515672.097689825 3.39063976145125 121.862187360621 9.6793069149288 -76.2702441482571 3851075.31582985 T 29 CATAB v2.0f-lin.ifort 2020-Feb-22 19:07:34 2020-Feb-22 19:07

Alternate Designations
 1997 AR4 = 1975 VH4 = 1982 BB3 = 1990 TZ3 = 1995 WV26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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