(10) Hygiea
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	20 Aug 2026	11.7	3.215 AU	4.187 AU	08h58m	+15°48'	14.1°	4.4°
Opposition	4 Mar 2027	9.8	3.011 AU	2.022 AU	10h52m	+01°49'	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)                : 0.1082238
            a (Semimajor axis)              : 3.1475913
            i (Inclination)                 : 3.83294
            Ω (Longitude of ascending node) : 283.12164
            ω (Argument of perihelion)      : 312.60583
            M (Mean anomaly)                : 216.69032
            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
2026-08-20 00:00 UT   08 58 56.6   +15 48 47     4.187    3.215   14.1    4.4   281   11.7 
2026-08-20 14:49 UT   08 59 48.7   +15 44 47     4.184    3.214   14.4    4.5   281   11.7 
2026-08-21 00:00 UT   09 00 20.9   +15 42 18     4.182    3.214   14.7    4.6   282   11.7 
2026-08-22 00:00 UT   09 01 45.0   +15 35 47     4.178    3.213   15.3    4.8   282   11.7 
2026-08-23 00:00 UT   09 03 08.9   +15 29 14     4.173    3.212   15.9    4.9   282   11.7 
2026-08-24 00:00 UT   09 04 32.7   +15 22 38     4.167    3.211   16.5    5.1   282   11.7 
2026-08-25 00:00 UT   09 05 56.4   +15 16 01     4.162    3.210   17.1    5.3   283   11.7 
2026-08-26 00:00 UT   09 07 19.9   +15 09 21     4.157    3.209   17.7    5.5   283   11.7 
2026-08-27 00:00 UT   09 08 43.2   +15 02 40     4.151    3.208   18.3    5.7   283   11.7 
2026-08-28 00:00 UT   09 10 06.4   +14 55 56     4.146    3.207   18.9    5.9   283   11.7 
2026-08-29 00:00 UT   09 11 29.5   +14 49 11     4.140    3.206   19.5    6.1   283   11.7 
2026-08-30 00:00 UT   09 12 52.3   +14 42 23     4.134    3.205   20.2    6.2   284   11.7 
2026-08-31 00:00 UT   09 14 15.0   +14 35 34     4.128    3.204   20.8    6.4   284   11.7 
2026-09-01 00:00 UT   09 15 37.6   +14 28 43     4.121    3.203   21.4    6.6   284   11.8 
2026-09-02 00:00 UT   09 16 59.9   +14 21 50     4.115    3.202   22.0    6.8   284   11.8 
2026-09-03 00:00 UT   09 18 22.1   +14 14 55     4.108    3.201   22.6    7.0   284   11.8 
2026-09-04 00:00 UT   09 19 44.2   +14 07 58     4.102    3.200   23.2    7.1   284   11.8 
2026-09-05 00:00 UT   09 21 06.0   +14 00 59     4.095    3.199   23.9    7.3   285   11.8 
2026-09-06 00:00 UT   09 22 27.7   +13 53 59     4.088    3.198   24.5    7.5   285   11.8 
2026-09-07 00:00 UT   09 23 49.2   +13 46 57     4.081    3.197   25.1    7.7   285   11.8 
2026-09-08 00:00 UT   09 25 10.4   +13 39 54     4.073    3.196   25.7    7.9   285   11.8 
2026-09-09 00:00 UT   09 26 31.5   +13 32 49     4.066    3.194   26.3    8.0   285   11.8 
2026-09-10 00:00 UT   09 27 52.4   +13 25 42     4.058    3.193   27.0    8.2   285   11.8 
2026-09-11 00:00 UT   09 29 13.1   +13 18 34     4.051    3.192   27.6    8.4   286   11.8 
2026-09-12 00:00 UT   09 30 33.5   +13 11 25     4.043    3.191   28.2    8.6   286   11.8 
2026-09-13 00:00 UT   09 31 53.8   +13 04 14     4.035    3.190   28.8    8.7   286   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.