(10) Hygiea
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	5 Jul 2025	12.1	3.482 AU	4.335 AU	04h48m	+24°19'	29.1°	8.2°
Opposition	21 Dec 2025	10.3	3.415 AU	2.431 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)                : 0.1096266
            a (Semimajor axis)              : 3.1436334
            i (Inclination)                 : 3.83243
            Ω (Longitude of ascending node) : 283.12779
            ω (Argument of perihelion)      : 312.70565
            M (Mean anomaly)                : 181.27891
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 235.89737
            B (Latitude of perihelion)      : -2.81529
            P (Orbital period in years)     : 5.57            
        

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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-07-05 00:00 UT   04 48 46.4   +24 19 06     4.335    3.482   29.1    8.2   266   12.1 
2025-07-05 23:47 UT   04 50 06.6   +24 21 08     4.327    3.482   29.8    8.3   266   12.1 
2025-07-06 00:00 UT   04 50 07.3   +24 21 09     4.327    3.482   29.8    8.3   266   12.1 
2025-07-07 00:00 UT   04 51 28.0   +24 23 10     4.320    3.482   30.4    8.5   266   12.1 
2025-07-08 00:00 UT   04 52 48.6   +24 25 07     4.312    3.482   31.1    8.7   267   12.1 
2025-07-09 00:00 UT   04 54 09.0   +24 27 02     4.305    3.481   31.7    8.8   267   12.1 
2025-07-10 00:00 UT   04 55 29.2   +24 28 55     4.297    3.481   32.4    9.0   267   12.1 
2025-07-11 00:00 UT   04 56 49.2   +24 30 45     4.289    3.481   33.0    9.2   267   12.1 
2025-07-12 00:00 UT   04 58 09.0   +24 32 32     4.281    3.481   33.7    9.3   267   12.1 
2025-07-13 00:00 UT   04 59 28.6   +24 34 16     4.273    3.481   34.3    9.5   267   12.1 
2025-07-14 00:00 UT   05 00 48.0   +24 35 58     4.264    3.480   35.0    9.6   267   12.1 
2025-07-15 00:00 UT   05 02 07.2   +24 37 38     4.256    3.480   35.6    9.8   267   12.1 
2025-07-16 00:00 UT   05 03 26.2   +24 39 14     4.247    3.480   36.3    9.9   267   12.1 
2025-07-17 00:00 UT   05 04 45.0   +24 40 48     4.238    3.480   36.9   10.1   267   12.1 
2025-07-18 00:00 UT   05 06 03.5   +24 42 20     4.229    3.479   37.6   10.3   267   12.1 
2025-07-19 00:00 UT   05 07 21.8   +24 43 49     4.220    3.479   38.2   10.4   267   12.1 
2025-07-20 00:00 UT   05 08 39.8   +24 45 15     4.211    3.479   38.9   10.6   267   12.1 
2025-07-21 00:00 UT   05 09 57.6   +24 46 39     4.202    3.479   39.5   10.7   267   12.1 
2025-07-22 00:00 UT   05 11 15.1   +24 48 00     4.192    3.479   40.2   10.9   267   12.2 
2025-07-23 00:00 UT   05 12 32.4   +24 49 19     4.183    3.478   40.9   11.0   267   12.2 
2025-07-24 00:00 UT   05 13 49.3   +24 50 35     4.173    3.478   41.5   11.2   267   12.2 
2025-07-25 00:00 UT   05 15 06.0   +24 51 49     4.163    3.478   42.2   11.3   268   12.2 
2025-07-26 00:00 UT   05 16 22.4   +24 52 60     4.153    3.478   42.9   11.5   268   12.2 
2025-07-27 00:00 UT   05 17 38.5   +24 54 09     4.143    3.477   43.5   11.6   268   12.2 
2025-07-28 00:00 UT   05 18 54.3   +24 55 15     4.133    3.477   44.2   11.7   268   12.2 
2025-07-29 00:00 UT   05 20 09.7   +24 56 19     4.122    3.477   44.9   11.9   268   12.2 
2025-07-30 00:00 UT   05 21 24.9   +24 57 20     4.112    3.477   45.5   12.0   268   12.2 
2025-07-31 00:00 UT   05 22 39.6   +24 58 19     4.101    3.476   46.2   12.2   268   12.2 
2025-08-01 00:00 UT   05 23 54.1   +24 59 16     4.090    3.476   46.9   12.3   268   12.2 
2025-08-02 00:00 UT   05 25 08.2   +25 00 10     4.079    3.476   47.5   12.4   268   12.1 

    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.