(494999) 2010 JU39
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	13 Mar 2026	22.4	1.386 AU	1.154 AU	18h15m	+14°43'	79.9°	44.9°

The interactive orbit chart above shows the body's path through the solar system and its position at the given date. Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below. (Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)

The orbital elements of 2010 JU39 are:

            e (Eccentricity)                : 0.5460131
            a (Semimajor axis)              : 0.9191390
            i (Inclination)                 : 36.21576
            Ω (Longitude of ascending node) : 95.15951
            ω (Argument of perihelion)      : 311.38090
            M (Mean anomaly)                : 21.50942
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 52.67769
            B (Latitude of perihelion)      : -26.31568
            P (Orbital period in years)     : 0.88            
        

The light curve chart below shows the estimated development of the minor planet's magnitude.

The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.

The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-03-13 00:00 UT   18 15 50.0   +14 43 29     1.154    1.386   79.9   44.9   276   22.4 
2026-03-13 00:14 UT   18 15 50.8   +14 43 35     1.154    1.386   80.0   44.9   276   22.4 
2026-03-14 00:00 UT   18 17 07.3   +14 53 07     1.148    1.388   80.4   44.9   275   22.4 
2026-03-15 00:00 UT   18 18 23.3   +15 02 53     1.141    1.390   80.9   44.9   275   22.4 
2026-03-16 00:00 UT   18 19 38.0   +15 12 47     1.134    1.392   81.4   44.9   274   22.4 
2026-03-17 00:00 UT   18 20 51.3   +15 22 50     1.127    1.394   81.9   44.9   274   22.4 
2026-03-18 00:00 UT   18 22 03.3   +15 33 01     1.120    1.397   82.4   44.9   273   22.4 
2026-03-19 00:00 UT   18 23 13.8   +15 43 21     1.113    1.398   82.9   44.9   273   22.4 
2026-03-20 00:00 UT   18 24 22.9   +15 53 49     1.106    1.400   83.4   44.9   272   22.3 
2026-03-21 00:00 UT   18 25 30.6   +16 04 26     1.099    1.402   83.9   44.9   272   22.3 
2026-03-22 00:00 UT   18 26 36.8   +16 15 11     1.091    1.404   84.4   44.9   271   22.3 
2026-03-23 00:00 UT   18 27 41.4   +16 26 04     1.084    1.405   84.9   44.9   271   22.3 
2026-03-24 00:00 UT   18 28 44.6   +16 37 06     1.076    1.407   85.4   44.9   270   22.3 
2026-03-25 00:00 UT   18 29 46.2   +16 48 16     1.068    1.408   85.9   44.9   270   22.3 
2026-03-26 00:00 UT   18 30 46.2   +16 59 34     1.060    1.410   86.4   44.9   269   22.3 
2026-03-27 00:00 UT   18 31 44.7   +17 10 60     1.052    1.411   87.0   44.9   268   22.3 
2026-03-28 00:00 UT   18 32 41.5   +17 22 34     1.044    1.412   87.5   44.9   268   22.2 
2026-03-29 00:00 UT   18 33 36.7   +17 34 17     1.036    1.413   88.0   44.9   267   22.2 
2026-03-30 00:00 UT   18 34 30.1   +17 46 08     1.028    1.415   88.5   44.9   267   22.2 
2026-03-31 00:00 UT   18 35 21.9   +17 58 07     1.020    1.416   89.1   44.9   266   22.2 
2026-04-01 00:00 UT   18 36 11.9   +18 10 15     1.011    1.416   89.6   44.9   266   22.2 
2026-04-02 00:00 UT   18 37 00.1   +18 22 31     1.003    1.417   90.1   44.8   265   22.2 
2026-04-03 00:00 UT   18 37 46.5   +18 34 55     0.994    1.418   90.7   44.8   264   22.1 
2026-04-04 00:00 UT   18 38 31.0   +18 47 28     0.986    1.419   91.2   44.8   264   22.1 
2026-04-05 00:00 UT   18 39 13.6   +19 00 09     0.977    1.419   91.7   44.8   263   22.1 
2026-04-06 00:00 UT   18 39 54.2   +19 12 59     0.968    1.420   92.3   44.8   263   22.1 
2026-04-07 00:00 UT   18 40 32.8   +19 25 57     0.959    1.420   92.8   44.7   262   22.1 
2026-04-08 00:00 UT   18 41 09.3   +19 39 04     0.950    1.420   93.4   44.7   261   22.0 
2026-04-09 00:00 UT   18 41 43.7   +19 52 19     0.941    1.421   93.9   44.7   261   22.0 
2026-04-10 00:00 UT   18 42 15.9   +20 05 42     0.932    1.421   94.5   44.7   260   22.0 

    Terminology:
            
    delta:  distance between minor planet and earth in AU
    radius: distance between minor planet and sun in AU
    magn:   magnitude (brightness) estimate    
    ra:     right ascension in hours (24h = 360deg)
    dec:    declination in degrees
    elong:  elongation in degrees (angle sun-earth-minor planet)    
    phase:  phase angle in degrees (angle sun-minor planet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km
    

Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.