(10) Hygiea
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Sep 2026	11.8	3.189 AU	4.004 AU	09h37m	+12°35'	31.3°	9.4°
Opposition	4 Mar 2027	9.8	3.016 AU	2.027 AU	10h51m	+01°51'	175.0°	1.6°

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 Hygiea are:

            e (Eccentricity)                : 0.1067093
            a (Semimajor axis)              : 3.1509741
            i (Inclination)                 : 3.82953
            Ω (Longitude of ascending node) : 283.11987
            ω (Argument of perihelion)      : 312.42426
            M (Mean anomaly)                : 252.03442
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 235.60791
            B (Latitude of perihelion)      : -2.82588
            P (Orbital period in years)     : 5.59            
        

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
2026-09-17 00:00 UT   09 37 11.7   +12 35 25     4.004    3.189   31.3    9.4   286   11.8 
2026-09-17 17:45 UT   09 38 10.1   +12 30 02     3.998    3.188   31.8    9.6   286   11.8 
2026-09-18 00:00 UT   09 38 30.7   +12 28 09     3.995    3.188   32.0    9.6   286   11.8 
2026-09-19 00:00 UT   09 39 49.5   +12 20 51     3.987    3.187   32.6    9.8   287   11.8 
2026-09-20 00:00 UT   09 41 08.0   +12 13 32     3.978    3.186   33.2   10.0   287   11.8 
2026-09-21 00:00 UT   09 42 26.3   +12 06 12     3.969    3.185   33.9   10.1   287   11.8 
2026-09-22 00:00 UT   09 43 44.4   +11 58 51     3.959    3.183   34.5   10.3   287   11.8 
2026-09-23 00:00 UT   09 45 02.2   +11 51 29     3.950    3.182   35.2   10.5   287   11.8 
2026-09-24 00:00 UT   09 46 19.7   +11 44 06     3.941    3.181   35.8   10.6   287   11.8 
2026-09-25 00:00 UT   09 47 37.0   +11 36 43     3.931    3.180   36.4   10.8   287   11.8 
2026-09-26 00:00 UT   09 48 54.0   +11 29 18     3.921    3.179   37.1   11.0   287   11.8 
2026-09-27 00:00 UT   09 50 10.7   +11 21 53     3.912    3.178   37.7   11.1   288   11.8 
2026-09-28 00:00 UT   09 51 27.1   +11 14 27     3.902    3.177   38.4   11.3   288   11.8 
2026-09-29 00:00 UT   09 52 43.3   +11 07 00     3.892    3.176   39.0   11.5   288   11.8 
2026-09-30 00:00 UT   09 53 59.2   +10 59 33     3.881    3.175   39.7   11.6   288   11.8 
2026-10-01 00:00 UT   09 55 14.8   +10 52 05     3.871    3.174   40.3   11.8   288   11.8 
2026-10-02 00:00 UT   09 56 30.2   +10 44 37     3.861    3.173   41.0   11.9   288   11.8 
2026-10-03 00:00 UT   09 57 45.2   +10 37 08     3.850    3.172   41.6   12.1   288   11.8 
2026-10-04 00:00 UT   09 58 59.9   +10 29 38     3.839    3.171   42.3   12.2   288   11.8 
2026-10-05 00:00 UT   10 00 14.3   +10 22 08     3.829    3.170   42.9   12.4   288   11.8 
2026-10-06 00:00 UT   10 01 28.5   +10 14 38     3.818    3.169   43.6   12.6   288   11.8 
2026-10-07 00:00 UT   10 02 42.3   +10 07 08     3.807    3.168   44.2   12.7   288   11.8 
2026-10-08 00:00 UT   10 03 55.7   +09 59 37     3.796    3.167   44.9   12.9   289   11.8 
2026-10-09 00:00 UT   10 05 08.9   +09 52 06     3.784    3.166   45.6   13.0   289   11.8 
2026-10-10 00:00 UT   10 06 21.7   +09 44 35     3.773    3.165   46.2   13.2   289   11.8 
2026-10-11 00:00 UT   10 07 34.1   +09 37 04     3.761    3.164   46.9   13.3   289   11.8 
2026-10-12 00:00 UT   10 08 46.2   +09 29 34     3.750    3.163   47.5   13.5   289   11.8 

    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.