2015 XO
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	27 Sep 2026	31.1	2.387 AU	2.469 AU	17h03m	-23°34'	73.5°	23.7°

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 2015 XO are:

            e (Eccentricity)                : 0.4108967
            a (Semimajor axis)              : 1.7619807
            i (Inclination)                 : 2.09366
            Ω (Longitude of ascending node) : 78.64556
            ω (Argument of perihelion)      : 2.27602
            M (Mean anomaly)                : 175.91802
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 80.92006
            B (Latitude of perihelion)      : 0.08313
            P (Orbital period in years)     : 2.34            
        

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
2026-09-27 00:00 UT   17 03 23.3   -23 34 06     2.469    2.387   73.5   23.7    96   31.1 
2026-09-27 17:08 UT   17 04 16.7   -23 35 24     2.477    2.385   73.0   23.7    96   31.1 
2026-09-28 00:00 UT   17 04 38.2   -23 35 56     2.480    2.385   72.8   23.7    96   31.1 
2026-09-29 00:00 UT   17 05 54.0   -23 37 44     2.491    2.383   72.1   23.6    96   31.1 
2026-09-30 00:00 UT   17 07 10.7   -23 39 31     2.502    2.381   71.4   23.5    95   31.1 
2026-10-01 00:00 UT   17 08 28.4   -23 41 17     2.513    2.379   70.8   23.4    95   31.1 
2026-10-02 00:00 UT   17 09 46.9   -23 43 02     2.523    2.376   70.1   23.3    95   31.1 
2026-10-03 00:00 UT   17 11 06.3   -23 44 45     2.534    2.374   69.4   23.2    95   31.1 
2026-10-04 00:00 UT   17 12 26.6   -23 46 26     2.545    2.372   68.7   23.1    95   31.1 
2026-10-05 00:00 UT   17 13 47.8   -23 48 06     2.555    2.370   68.0   23.0    95   31.1 
2026-10-06 00:00 UT   17 15 09.8   -23 49 45     2.565    2.368   67.4   22.9    95   31.1 
2026-10-07 00:00 UT   17 16 32.7   -23 51 21     2.576    2.366   66.7   22.8    95   31.1 
2026-10-08 00:00 UT   17 17 56.4   -23 52 55     2.586    2.364   66.0   22.7    95   31.1 
2026-10-09 00:00 UT   17 19 21.0   -23 54 28     2.596    2.361   65.4   22.6    94   31.1 
2026-10-10 00:00 UT   17 20 46.3   -23 55 58     2.606    2.359   64.7   22.5    94   31.1 
2026-10-11 00:00 UT   17 22 12.5   -23 57 26     2.616    2.357   64.0   22.4    94   31.1 
2026-10-12 00:00 UT   17 23 39.5   -23 58 52     2.626    2.355   63.4   22.3    94   31.1 
2026-10-13 00:00 UT   17 25 07.3   -24 00 16     2.636    2.352   62.7   22.2    94   31.1 
2026-10-14 00:00 UT   17 26 35.9   -24 01 37     2.645    2.350   62.1   22.0    94   31.1 
2026-10-15 00:00 UT   17 28 05.2   -24 02 55     2.655    2.348   61.4   21.9    94   31.1 
2026-10-16 00:00 UT   17 29 35.3   -24 04 11     2.664    2.345   60.8   21.8    93   31.1 
2026-10-17 00:00 UT   17 31 06.1   -24 05 24     2.674    2.343   60.1   21.7    93   31.1 
2026-10-18 00:00 UT   17 32 37.6   -24 06 34     2.683    2.340   59.5   21.5    93   31.1 
2026-10-19 00:00 UT   17 34 09.9   -24 07 41     2.692    2.338   58.9   21.4    93   31.1 
2026-10-20 00:00 UT   17 35 42.9   -24 08 46     2.701    2.336   58.2   21.3    93   31.1 
2026-10-21 00:00 UT   17 37 16.5   -24 09 47     2.710    2.333   57.6   21.1    93   31.1 
2026-10-22 00:00 UT   17 38 50.9   -24 10 45     2.719    2.331   56.9   21.0    93   31.1 
2026-10-23 00:00 UT   17 40 26.0   -24 11 40     2.728    2.328   56.3   20.8    93   31.1 

    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.