(10) Hygiea
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	26 Oct 2025	11.5	3.445 AU	2.900 AU	06h31m	+24°53'	115.4°	15.1°
Opposition	21 Dec 2025	10.3	3.415 AU	2.432 AU	06h02m	+24°38'	178.4°	0.5°

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)                : 0.1082238
            a (Semimajor axis)              : 3.1475914
            i (Inclination)                 : 3.83294
            Ω (Longitude of ascending node) : 283.12164
            ω (Argument of perihelion)      : 312.60583
            M (Mean anomaly)                : 216.69031
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 235.79140
            B (Latitude of perihelion)      : -2.82019
            P (Orbital period in years)     : 5.58            
        

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
2025-10-26 00:00 UT   06 31 15.1   +24 53 36     2.900    3.445  115.4   15.1   272   11.5 
2025-10-26 14:11 UT   06 31 17.8   +24 53 27     2.892    3.445  116.0   15.0   272   11.5 
2025-10-27 00:00 UT   06 31 19.3   +24 53 21     2.886    3.445  116.4   15.0   272   11.5 
2025-10-28 00:00 UT   06 31 22.1   +24 53 06     2.873    3.444  117.3   14.8   272   11.4 
2025-10-29 00:00 UT   06 31 23.6   +24 52 52     2.860    3.444  118.3   14.7   272   11.4 
2025-10-30 00:00 UT   06 31 23.7   +24 52 39     2.846    3.443  119.3   14.6   272   11.4 
2025-10-31 00:00 UT   06 31 22.5   +24 52 26     2.833    3.443  120.3   14.4   272   11.4 
2025-11-01 00:00 UT   06 31 19.9   +24 52 14     2.820    3.442  121.3   14.3   272   11.4 
2025-11-02 00:00 UT   06 31 15.9   +24 52 03     2.807    3.442  122.4   14.1   272   11.4 
2025-11-03 00:00 UT   06 31 10.6   +24 51 52     2.794    3.441  123.4   13.9   272   11.4 
2025-11-04 00:00 UT   06 31 03.9   +24 51 41     2.782    3.441  124.4   13.8   272   11.3 
2025-11-05 00:00 UT   06 30 55.8   +24 51 31     2.769    3.440  125.4   13.6   272   11.3 
2025-11-06 00:00 UT   06 30 46.4   +24 51 21     2.757    3.440  126.5   13.4   272   11.3 
2025-11-07 00:00 UT   06 30 35.5   +24 51 12     2.745    3.440  127.5   13.2   272   11.3 
2025-11-08 00:00 UT   06 30 23.3   +24 51 03     2.733    3.439  128.6   13.0   272   11.3 
2025-11-09 00:00 UT   06 30 09.7   +24 50 55     2.721    3.439  129.6   12.8   272   11.3 
2025-11-10 00:00 UT   06 29 54.7   +24 50 47     2.709    3.438  130.7   12.6   272   11.2 
2025-11-11 00:00 UT   06 29 38.3   +24 50 39     2.698    3.438  131.7   12.4   272   11.2 
2025-11-12 00:00 UT   06 29 20.6   +24 50 32     2.687    3.437  132.8   12.2   271   11.2 
2025-11-13 00:00 UT   06 29 01.4   +24 50 24     2.675    3.436  133.9   12.0   271   11.2 
2025-11-14 00:00 UT   06 28 40.9   +24 50 17     2.665    3.436  135.0   11.8   271   11.2 
2025-11-15 00:00 UT   06 28 19.1   +24 50 10     2.654    3.435  136.1   11.5   271   11.1 
2025-11-16 00:00 UT   06 27 55.8   +24 50 03     2.643    3.435  137.2   11.3   271   11.1 
2025-11-17 00:00 UT   06 27 31.2   +24 49 57     2.633    3.434  138.3   11.1   271   11.1 
2025-11-18 00:00 UT   06 27 05.3   +24 49 50     2.623    3.434  139.4   10.8   271   11.1 
2025-11-19 00:00 UT   06 26 38.1   +24 49 43     2.613    3.433  140.5   10.6   271   11.1 
2025-11-20 00:00 UT   06 26 09.5   +24 49 35     2.603    3.433  141.6   10.3   271   11.1 
2025-11-21 00:00 UT   06 25 39.7   +24 49 28     2.594    3.432  142.7   10.0   271   11.0 
2025-11-22 00:00 UT   06 25 08.6   +24 49 20     2.584    3.432  143.8    9.8   270   11.0 
2025-11-23 00:00 UT   06 24 36.3   +24 49 12     2.575    3.431  145.0    9.5   270   11.0 
2025-11-24 00:00 UT   06 24 02.7   +24 49 04     2.567    3.431  146.1    9.2   270   11.0 
2025-11-25 00:00 UT   06 23 27.9   +24 48 55     2.558    3.430  147.3    9.0   270   11.0 

    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.