2015 XO
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	5 Feb 2026	31.1	2.309 AU	2.634 AU	16h57m	-21°53'	60.2°	21.8°

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)                : 0.4110059
            a (Semimajor axis)              : 1.7618063
            i (Inclination)                 : 2.09379
            Ω (Longitude of ascending node) : 78.64435
            ω (Argument of perihelion)      : 2.26718
            M (Mean anomaly)                : 91.64147
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 80.91002
            B (Latitude of perihelion)      : 0.08281
            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
2026-02-05 00:00 UT   16 57 45.3   -21 53 33     2.634    2.309   60.2   21.8   277   31.1 
2026-02-05 23:23 UT   16 59 13.1   -21 55 53     2.625    2.312   60.9   21.9   276   31.1 
2026-02-06 00:00 UT   16 59 15.4   -21 55 56     2.625    2.312   60.9   21.9   276   31.1 
2026-02-07 00:00 UT   17 00 44.8   -21 58 16     2.615    2.314   61.6   22.0   276   31.1 
2026-02-08 00:00 UT   17 02 13.5   -22 00 31     2.606    2.317   62.2   22.1   276   31.1 
2026-02-09 00:00 UT   17 03 41.5   -22 02 42     2.596    2.320   62.9   22.3   276   31.1 
2026-02-10 00:00 UT   17 05 08.7   -22 04 50     2.586    2.322   63.6   22.4   276   31.1 
2026-02-11 00:00 UT   17 06 35.3   -22 06 53     2.577    2.325   64.3   22.5   276   31.1 
2026-02-12 00:00 UT   17 08 01.1   -22 08 52     2.567    2.327   64.9   22.6   275   31.1 
2026-02-13 00:00 UT   17 09 26.1   -22 10 48     2.557    2.330   65.6   22.7   275   31.1 
2026-02-14 00:00 UT   17 10 50.4   -22 12 39     2.547    2.332   66.3   22.8   275   31.1 
2026-02-15 00:00 UT   17 12 13.9   -22 14 28     2.537    2.335   67.0   22.9   275   31.1 
2026-02-16 00:00 UT   17 13 36.5   -22 16 12     2.526    2.337   67.7   23.0   275   31.0 
2026-02-17 00:00 UT   17 14 58.4   -22 17 53     2.516    2.340   68.4   23.1   275   31.0 
2026-02-18 00:00 UT   17 16 19.4   -22 19 30     2.505    2.342   69.1   23.2   275   31.0 
2026-02-19 00:00 UT   17 17 39.5   -22 21 04     2.495    2.344   69.8   23.3   274   31.0 
2026-02-20 00:00 UT   17 18 58.8   -22 22 35     2.484    2.347   70.5   23.4   274   31.0 
2026-02-21 00:00 UT   17 20 17.2   -22 24 02     2.474    2.349   71.2   23.5   274   31.0 
2026-02-22 00:00 UT   17 21 34.7   -22 25 26     2.463    2.351   71.9   23.6   274   31.0 
2026-02-23 00:00 UT   17 22 51.3   -22 26 47     2.452    2.354   72.6   23.6   274   31.0 
2026-02-24 00:00 UT   17 24 07.0   -22 28 05     2.441    2.356   73.3   23.7   274   31.0 
2026-02-25 00:00 UT   17 25 21.7   -22 29 20     2.430    2.358   74.0   23.8   274   31.0 
2026-02-26 00:00 UT   17 26 35.5   -22 30 32     2.419    2.360   74.7   23.9   274   31.0 
2026-02-27 00:00 UT   17 27 48.3   -22 31 41     2.408    2.363   75.5   23.9   273   31.0 
2026-02-28 00:00 UT   17 29 00.2   -22 32 47     2.397    2.365   76.2   24.0   273   31.0 
2026-03-01 00:00 UT   17 30 11.1   -22 33 51     2.386    2.367   76.9   24.1   273   31.0 
2026-03-02 00:00 UT   17 31 20.9   -22 34 53     2.374    2.369   77.7   24.1   273   31.0 
2026-03-03 00:00 UT   17 32 29.7   -22 35 51     2.363    2.371   78.4   24.2   273   31.0 
2026-03-04 00:00 UT   17 33 37.5   -22 36 48     2.351    2.374   79.1   24.2   273   31.0 

    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.