(10) Hygiea
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Jan 2025	11.9	3.476 AU	3.439 AU	01h30m	+13°07'	84.0°	16.4°
Opposition	21 Dec 2025	10.3	3.414 AU	2.430 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)                : 0.1104436
            a (Semimajor axis)              : 3.1413261
            i (Inclination)                 : 3.83162
            Ω (Longitude of ascending node) : 283.14844
            ω (Argument of perihelion)      : 312.63001
            M (Mean anomaly)                : 145.93643
            Epoch                           : 2024 Oct 17

            L (Longitude of perihelion)     : 235.84234
            B (Latitude of perihelion)      : -2.81812
            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
2025-01-22 00:00 UT   01 30 37.3   +13 07 25     3.439    3.476   84.0   16.4    68   11.9 
2025-01-22 04:52 UT   01 30 45.6   +13 07 57     3.442    3.476   83.8   16.3    68   11.9 
2025-01-23 00:00 UT   01 31 18.4   +13 10 07     3.454    3.476   83.1   16.3    68   11.9 
2025-01-24 00:00 UT   01 32 00.2   +13 12 53     3.469    3.477   82.3   16.3    68   11.9 
2025-01-25 00:00 UT   01 32 42.7   +13 15 45     3.484    3.477   81.4   16.3    68   11.9 
2025-01-26 00:00 UT   01 33 26.0   +13 18 41     3.500    3.477   80.6   16.2    68   12.0 
2025-01-27 00:00 UT   01 34 10.1   +13 21 41     3.515    3.477   79.8   16.2    68   12.0 
2025-01-28 00:00 UT   01 34 54.9   +13 24 46     3.529    3.478   78.9   16.1    68   12.0 
2025-01-29 00:00 UT   01 35 40.5   +13 27 56     3.544    3.478   78.1   16.1    68   12.0 
2025-01-30 00:00 UT   01 36 26.7   +13 31 09     3.559    3.478   77.3   16.0    68   12.0 
2025-01-31 00:00 UT   01 37 13.7   +13 34 27     3.574    3.478   76.5   16.0    68   12.0 
2025-02-01 00:00 UT   01 38 01.4   +13 37 49     3.589    3.478   75.7   15.9    68   12.0 
2025-02-02 00:00 UT   01 38 49.7   +13 41 15     3.604    3.479   74.9   15.9    68   12.0 
2025-02-03 00:00 UT   01 39 38.8   +13 44 45     3.618    3.479   74.0   15.8    68   12.0 
2025-02-04 00:00 UT   01 40 28.5   +13 48 18     3.633    3.479   73.2   15.7    68   12.0 
2025-02-05 00:00 UT   01 41 18.8   +13 51 56     3.647    3.479   72.4   15.7    68   12.0 
2025-02-06 00:00 UT   01 42 09.8   +13 55 37     3.662    3.480   71.6   15.6    68   12.0 
2025-02-07 00:00 UT   01 43 01.4   +13 59 21     3.676    3.480   70.8   15.5    68   12.0 
2025-02-08 00:00 UT   01 43 53.7   +14 03 09     3.691    3.480   70.1   15.5    68   12.0 
2025-02-09 00:00 UT   01 44 46.5   +14 07 01     3.705    3.480   69.3   15.4    68   12.0 
2025-02-10 00:00 UT   01 45 40.0   +14 10 55     3.719    3.480   68.5   15.3    68   12.1 
2025-02-11 00:00 UT   01 46 34.0   +14 14 53     3.733    3.481   67.7   15.2    68   12.1 
2025-02-12 00:00 UT   01 47 28.7   +14 18 54     3.747    3.481   66.9   15.1    68   12.1 
2025-02-13 00:00 UT   01 48 23.9   +14 22 58     3.761    3.481   66.1   15.0    68   12.1 
2025-02-14 00:00 UT   01 49 19.7   +14 27 05     3.775    3.481   65.4   14.9    68   12.1 
2025-02-15 00:00 UT   01 50 16.0   +14 31 15     3.789    3.481   64.6   14.8    68   12.1 
2025-02-16 00:00 UT   01 51 12.9   +14 35 27     3.803    3.482   63.8   14.8    68   12.1 
2025-02-17 00:00 UT   01 52 10.3   +14 39 42     3.816    3.482   63.1   14.7    68   12.1 
2025-02-18 00:00 UT   01 53 08.3   +14 44 00     3.830    3.482   62.3   14.6    68   12.1 
2025-02-19 00:00 UT   01 54 06.8   +14 48 21     3.843    3.482   61.5   14.5    68   12.1 
2025-02-20 00:00 UT   01 55 05.8   +14 52 44     3.856    3.482   60.8   14.3    68   12.1 
2025-02-21 00:00 UT   01 56 05.4   +14 57 09     3.870    3.483   60.0   14.2    68   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.