(10) Hygiea
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	10 Oct 2025	11.7	3.452 AU	3.129 AU	06h27m	+24°58'	100.4°	16.5°
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. 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
2025-10-10 00:00 UT   06 27 13.5   +24 58 54     3.129    3.452  100.4   16.5   272   11.7 
2025-10-10 04:37 UT   06 27 18.2   +24 58 49     3.126    3.452  100.6   16.5   272   11.7 
2025-10-11 00:00 UT   06 27 37.7   +24 58 31     3.114    3.452  101.3   16.5   272   11.7 
2025-10-12 00:00 UT   06 28 00.8   +24 58 08     3.100    3.452  102.2   16.4   272   11.7 
2025-10-13 00:00 UT   06 28 22.8   +24 57 45     3.085    3.451  103.1   16.4   272   11.7 
2025-10-14 00:00 UT   06 28 43.5   +24 57 23     3.070    3.451  104.0   16.3   272   11.6 
2025-10-15 00:00 UT   06 29 03.1   +24 57 01     3.056    3.450  104.9   16.2   272   11.6 
2025-10-16 00:00 UT   06 29 21.4   +24 56 40     3.041    3.450  105.9   16.1   272   11.6 
2025-10-17 00:00 UT   06 29 38.5   +24 56 19     3.027    3.449  106.8   16.1   272   11.6 
2025-10-18 00:00 UT   06 29 54.4   +24 55 59     3.012    3.449  107.7   16.0   272   11.6 
2025-10-19 00:00 UT   06 30 09.0   +24 55 39     2.998    3.448  108.7   15.9   272   11.6 
2025-10-20 00:00 UT   06 30 22.3   +24 55 19     2.984    3.448  109.6   15.8   272   11.6 
2025-10-21 00:00 UT   06 30 34.4   +24 55 01     2.970    3.448  110.6   15.7   272   11.5 
2025-10-22 00:00 UT   06 30 45.2   +24 54 43     2.956    3.447  111.5   15.6   272   11.5 
2025-10-23 00:00 UT   06 30 54.6   +24 54 25     2.941    3.447  112.5   15.5   272   11.5 
2025-10-24 00:00 UT   06 31 02.8   +24 54 08     2.928    3.446  113.4   15.4   272   11.5 
2025-10-25 00:00 UT   06 31 09.6   +24 53 52     2.914    3.446  114.4   15.2   272   11.5 
2025-10-26 00:00 UT   06 31 15.1   +24 53 36     2.900    3.445  115.4   15.1   272   11.5 
2025-10-27 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 

    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.