2009 WU25
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Nov 2025	31.3	3.301 AU	4.009 AU	13h03m	-02°42'	39.1°	10.9°

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 2009 WU25 are:

            e (Eccentricity)                : 0.5981225
            a (Semimajor axis)              : 2.4094719
            i (Inclination)                 : 5.43263
            Ω (Longitude of ascending node) : 60.58097
            ω (Argument of perihelion)      : 331.33807
            M (Mean anomaly)                : 102.36092
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 32.02747
            B (Latitude of perihelion)      : -2.60270
            P (Orbital period in years)     : 3.74            
        

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
2025-11-17 00:00 UT   13 03 05.1   -02 42 27     4.009    3.301   39.1   10.9   297   31.3 
2025-11-17 16:12 UT   13 03 46.1   -02 46 28     4.005    3.304   39.6   11.0   297   31.3 
2025-11-18 00:00 UT   13 04 05.7   -02 48 24     4.003    3.305   39.8   11.0   297   31.3 
2025-11-19 00:00 UT   13 05 06.0   -02 54 17     3.996    3.309   40.6   11.2   297   31.3 
2025-11-20 00:00 UT   13 06 05.9   -03 00 08     3.990    3.313   41.3   11.4   297   31.3 
2025-11-21 00:00 UT   13 07 05.3   -03 05 54     3.983    3.316   42.1   11.5   297   31.3 
2025-11-22 00:00 UT   13 08 04.4   -03 11 37     3.976    3.320   42.8   11.7   296   31.3 
2025-11-23 00:00 UT   13 09 03.1   -03 17 16     3.969    3.324   43.5   11.8   296   31.3 
2025-11-24 00:00 UT   13 10 01.3   -03 22 52     3.962    3.327   44.3   12.0   296   31.3 
2025-11-25 00:00 UT   13 10 59.2   -03 28 23     3.955    3.331   45.0   12.1   296   31.3 
2025-11-26 00:00 UT   13 11 56.6   -03 33 51     3.947    3.335   45.8   12.2   296   31.3 
2025-11-27 00:00 UT   13 12 53.5   -03 39 15     3.939    3.339   46.5   12.4   296   31.3 
2025-11-28 00:00 UT   13 13 50.0   -03 44 36     3.932    3.342   47.3   12.5   296   31.3 
2025-11-29 00:00 UT   13 14 46.1   -03 49 52     3.924    3.346   48.1   12.7   296   31.3 
2025-11-30 00:00 UT   13 15 41.7   -03 55 04     3.915    3.349   48.8   12.8   295   31.3 
2025-12-01 00:00 UT   13 16 36.8   -04 00 13     3.907    3.353   49.6   12.9   295   31.3 
2025-12-02 00:00 UT   13 17 31.5   -04 05 17     3.899    3.357   50.4   13.1   295   31.3 
2025-12-03 00:00 UT   13 18 25.6   -04 10 17     3.890    3.360   51.1   13.2   295   31.4 
2025-12-04 00:00 UT   13 19 19.3   -04 15 14     3.881    3.364   51.9   13.3   295   31.4 
2025-12-05 00:00 UT   13 20 12.5   -04 20 06     3.872    3.367   52.7   13.5   295   31.4 
2025-12-06 00:00 UT   13 21 05.2   -04 24 54     3.863    3.371   53.5   13.6   295   31.4 
2025-12-07 00:00 UT   13 21 57.4   -04 29 37     3.854    3.374   54.2   13.7   295   31.4 
2025-12-08 00:00 UT   13 22 49.1   -04 34 17     3.845    3.378   55.0   13.8   295   31.4 
2025-12-09 00:00 UT   13 23 40.2   -04 38 52     3.835    3.381   55.8   13.9   294   31.4 
2025-12-10 00:00 UT   13 24 30.8   -04 43 23     3.826    3.385   56.6   14.1   294   31.4 
2025-12-11 00:00 UT   13 25 20.9   -04 47 50     3.816    3.388   57.4   14.2   294   31.4 
2025-12-12 00:00 UT   13 26 10.4   -04 52 12     3.806    3.392   58.2   14.3   294   31.4 
2025-12-13 00:00 UT   13 26 59.3   -04 56 30     3.796    3.395   59.0   14.4   294   31.4 
2025-12-14 00:00 UT   13 27 47.7   -05 00 43     3.786    3.399   59.8   14.5   294   31.4 
2025-12-15 00:00 UT   13 28 35.5   -05 04 52     3.775    3.402   60.6   14.6   294   31.4 
2025-12-16 00:00 UT   13 29 22.6   -05 08 56     3.765    3.405   61.4   14.7   294   31.4 
2025-12-17 00:00 UT   13 30 09.2   -05 12 55     3.754    3.409   62.2   14.8   294   31.4 

    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.