2018 WA2
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	25 Dec 2025	27.5	2.286 AU	2.521 AU	22h40m	-09°24'	65.0°	22.9°

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 2018 WA2 are:

            e (Eccentricity)                : 0.5318867
            a (Semimajor axis)              : 1.8469122
            i (Inclination)                 : 3.01771
            Ω (Longitude of ascending node) : 21.00784
            ω (Argument of perihelion)      : 122.25386
            M (Mean anomaly)                : 257.35376
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : -36.70241
            B (Latitude of perihelion)      : 2.55172
            P (Orbital period in years)     : 2.51            
        

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
2025-12-25 00:00 UT   22 40 18.0   -09 24 47     2.521    2.286   65.0   22.9    68   27.5 
2025-12-25 19:42 UT   22 41 14.0   -09 18 25     2.528    2.282   64.4   22.9    68   27.5 
2025-12-26 00:00 UT   22 41 26.3   -09 17 01     2.529    2.281   64.3   22.9    68   27.5 
2025-12-27 00:00 UT   22 42 35.5   -09 09 10     2.537    2.276   63.6   22.8    68   27.5 
2025-12-28 00:00 UT   22 43 45.6   -09 01 14     2.544    2.271   62.9   22.7    68   27.5 
2025-12-29 00:00 UT   22 44 56.4   -08 53 12     2.552    2.266   62.2   22.6    68   27.5 
2025-12-30 00:00 UT   22 46 07.9   -08 45 05     2.559    2.261   61.5   22.5    68   27.5 
2025-12-31 00:00 UT   22 47 20.3   -08 36 52     2.567    2.256   60.8   22.4    68   27.5 
2026-01-01 00:00 UT   22 48 33.4   -08 28 35     2.574    2.251   60.1   22.2    68   27.5 
2026-01-02 00:00 UT   22 49 47.3   -08 20 12     2.581    2.246   59.4   22.1    68   27.5 
2026-01-03 00:00 UT   22 51 01.9   -08 11 44     2.588    2.241   58.7   22.0    68   27.5 
2026-01-04 00:00 UT   22 52 17.2   -08 03 10     2.595    2.236   58.1   21.9    68   27.5 
2026-01-05 00:00 UT   22 53 33.2   -07 54 32     2.602    2.231   57.4   21.8    68   27.5 
2026-01-06 00:00 UT   22 54 50.0   -07 45 48     2.608    2.226   56.7   21.7    68   27.5 
2026-01-07 00:00 UT   22 56 07.5   -07 36 60     2.615    2.221   56.0   21.5    68   27.5 
2026-01-08 00:00 UT   22 57 25.7   -07 28 06     2.621    2.216   55.4   21.4    68   27.5 
2026-01-09 00:00 UT   22 58 44.5   -07 19 07     2.627    2.210   54.7   21.3    68   27.5 
2026-01-10 00:00 UT   23 00 04.1   -07 10 03     2.634    2.205   54.1   21.2    68   27.4 
2026-01-11 00:00 UT   23 01 24.4   -07 00 54     2.640    2.200   53.4   21.0    68   27.4 
2026-01-12 00:00 UT   23 02 45.3   -06 51 40     2.645    2.195   52.8   20.9    68   27.4 
2026-01-13 00:00 UT   23 04 06.9   -06 42 21     2.651    2.189   52.1   20.8    68   27.4 
2026-01-14 00:00 UT   23 05 29.2   -06 32 57     2.657    2.184   51.5   20.6    68   27.4 
2026-01-15 00:00 UT   23 06 52.1   -06 23 28     2.662    2.179   50.8   20.5    68   27.4 
2026-01-16 00:00 UT   23 08 15.7   -06 13 55     2.668    2.173   50.2   20.3    68   27.4 
2026-01-17 00:00 UT   23 09 39.9   -06 04 16     2.673    2.168   49.6   20.2    68   27.4 
2026-01-18 00:00 UT   23 11 04.8   -05 54 33     2.678    2.162   48.9   20.1    68   27.4 

    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.