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13787 Nagaishi (1998 UN23)
Classification: Outer Main-belt Asteroid          SPK-ID: 2013787
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1318093530539357 5.1317e-08  
a 3.200305435542835 2.8094e-08 au
q 2.77847524650894 1.7348e-07 au
i 2.126170806663719 5.1303e-06 deg
node 99.8178292855395 0.00016135 deg
peri 335.8914761665789 0.00016306 deg
M 17.72490752641243 2.2626e-05 deg
tp 2457497.540352290796
0.00013144 JED
period 2091.151850585451
n .1721539255502714 2.2669e-09 deg/d
Q 3.62213562457673 3.1797e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1204  
   data-arc span      14756 days (40.40 yr)  
   first obs. used      1975-11-02  
   last obs. used      2016-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52156  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:17:27  

Additional Information
 Earth MOID = 1.79218 au 
 Jupiter MOID = 1.63674 au 
 T_jup = 3.180 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a MPO347634  

13787 Nagaishi           Discovered 1998 Oct. 26 by T. Okuni at Nanyo.
Nagaishi city, situated in the southern part of Yamagata prefecture, has a population of 30~000 and is famous for its White azalea Park and Iris Park.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100330/MPCPages.arcLast Updated: 2010-04-05

[ show close-approach data ]
Alternate Designations
 1998 UN23 = 1975 VV4 = 1977 DQ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-Apr-30 22:33 UT
(server date/time)  
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