(40) Harmonia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Oct 2025	10.8	2.239 AU	1.811 AU	07h11m	+21°12'	101.9°	25.8°
Opposition	2 Jan 2026	9.0	2.277 AU	1.294 AU	06h52m	+23°54'	179.0°	0.4°

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 Harmonia are:

            e (Eccentricity)                : 0.0462893
            a (Semimajor axis)              : 2.2678501
            i (Inclination)                 : 4.25575
            Ω (Longitude of ascending node) : 94.15655
            ω (Argument of perihelion)      : 269.84324
            M (Mean anomaly)                : 80.29464
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 183.99936
            B (Latitude of perihelion)      : -4.25573
            P (Orbital period in years)     : 3.42            
        

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
2025-10-22 00:00 UT   07 11 15.0   +21 12 09     1.811    2.239  101.9   25.8   277   10.8 
2025-10-22 02:07 UT   07 11 19.6   +21 12 07     1.810    2.239  102.0   25.8   277   10.8 
2025-10-23 00:00 UT   07 12 05.9   +21 11 49     1.800    2.240  102.7   25.7   277   10.8 
2025-10-24 00:00 UT   07 12 55.1   +21 11 32     1.788    2.240  103.5   25.6   277   10.7 
2025-10-25 00:00 UT   07 13 42.8   +21 11 17     1.777    2.241  104.3   25.5   278   10.7 
2025-10-26 00:00 UT   07 14 28.9   +21 11 06     1.766    2.241  105.1   25.4   278   10.7 
2025-10-27 00:00 UT   07 15 13.4   +21 10 58     1.754    2.242  106.0   25.2   278   10.7 
2025-10-28 00:00 UT   07 15 56.3   +21 10 53     1.743    2.242  106.8   25.1   278   10.7 
2025-10-29 00:00 UT   07 16 37.5   +21 10 52     1.732    2.243  107.6   25.0   278   10.7 
2025-10-30 00:00 UT   07 17 17.0   +21 10 54     1.721    2.243  108.5   24.8   278   10.6 
2025-10-31 00:00 UT   07 17 54.9   +21 11 01     1.710    2.244  109.3   24.7   278   10.6 
2025-11-01 00:00 UT   07 18 31.0   +21 11 11     1.699    2.244  110.2   24.5   278   10.6 
2025-11-02 00:00 UT   07 19 05.3   +21 11 25     1.688    2.245  111.1   24.4   278   10.6 
2025-11-03 00:00 UT   07 19 37.9   +21 11 43     1.677    2.245  111.9   24.2   278   10.6 
2025-11-04 00:00 UT   07 20 08.7   +21 12 06     1.667    2.246  112.8   24.0   278   10.6 
2025-11-05 00:00 UT   07 20 37.7   +21 12 33     1.656    2.247  113.7   23.8   278   10.5 
2025-11-06 00:00 UT   07 21 04.8   +21 13 05     1.645    2.247  114.6   23.6   278   10.5 
2025-11-07 00:00 UT   07 21 30.1   +21 13 42     1.635    2.248  115.5   23.4   278   10.5 
2025-11-08 00:00 UT   07 21 53.4   +21 14 23     1.624    2.248  116.4   23.2   278   10.5 
2025-11-09 00:00 UT   07 22 14.9   +21 15 09     1.614    2.249  117.4   23.0   278   10.5 
2025-11-10 00:00 UT   07 22 34.4   +21 16 00     1.604    2.249  118.3   22.8   278   10.4 
2025-11-11 00:00 UT   07 22 52.0   +21 16 57     1.593    2.250  119.2   22.6   279   10.4 
2025-11-12 00:00 UT   07 23 07.5   +21 17 58     1.583    2.250  120.2   22.4   279   10.4 
2025-11-13 00:00 UT   07 23 21.0   +21 19 05     1.573    2.251  121.1   22.1   279   10.4 
2025-11-14 00:00 UT   07 23 32.5   +21 20 18     1.563    2.251  122.1   21.9   279   10.4 
2025-11-15 00:00 UT   07 23 41.9   +21 21 36     1.554    2.252  123.1   21.6   279   10.3 
2025-11-16 00:00 UT   07 23 49.3   +21 22 59     1.544    2.252  124.1   21.3   279   10.3 
2025-11-17 00:00 UT   07 23 54.5   +21 24 29     1.534    2.253  125.1   21.1   279   10.3 
2025-11-18 00:00 UT   07 23 57.6   +21 26 04     1.525    2.253  126.1   20.8   279   10.3 
2025-11-19 00:00 UT   07 23 58.6   +21 27 44     1.516    2.254  127.1   20.5   279   10.2 
2025-11-20 00:00 UT   07 23 57.4   +21 29 31     1.506    2.254  128.1   20.2   279   10.2 
2025-11-21 00:00 UT   07 23 54.1   +21 31 24     1.497    2.255  129.1   19.9   279   10.2 

    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.