(27) Euterpe
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Jul 2025	10.9	2.602 AU	1.679 AU	21h57m	-14°09'	148.7°	11.7°
Opposition	13 Aug 2025	10.2	2.564 AU	1.551 AU	21h35m	-16°20'	178.1°	0.7°

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 Euterpe are:

            e (Eccentricity)                : 0.1715064
            a (Semimajor axis)              : 2.3475338
            i (Inclination)                 : 1.58333
            Ω (Longitude of ascending node) : 94.76734
            ω (Argument of perihelion)      : 356.51893
            M (Mean anomaly)                : 218.18562
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 91.28760
            B (Latitude of perihelion)      : -0.09613
            P (Orbital period in years)     : 3.60            
        

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
2025-07-18 00:00 UT   21 57 17.7   -14 09 21     1.679    2.602  148.7   11.7   253   10.9 
2025-07-18 23:08 UT   21 56 44.1   -14 13 10     1.672    2.600  149.8   11.3   253   10.9 
2025-07-19 00:00 UT   21 56 42.8   -14 13 19     1.671    2.600  149.8   11.3   253   10.9 
2025-07-20 00:00 UT   21 56 06.4   -14 17 23     1.664    2.599  150.9   10.9   253   10.9 
2025-07-21 00:00 UT   21 55 28.6   -14 21 35     1.656    2.598  152.1   10.6   253   10.9 
2025-07-22 00:00 UT   21 54 49.4   -14 25 53     1.649    2.596  153.2   10.2   253   10.8 
2025-07-23 00:00 UT   21 54 08.8   -14 30 17     1.642    2.595  154.3    9.8   254   10.8 
2025-07-24 00:00 UT   21 53 26.8   -14 34 48     1.635    2.594  155.4    9.4   254   10.8 
2025-07-25 00:00 UT   21 52 43.6   -14 39 24     1.628    2.592  156.6    9.0   254   10.8 
2025-07-26 00:00 UT   21 51 59.0   -14 44 05     1.622    2.591  157.7    8.5   254   10.7 
2025-07-27 00:00 UT   21 51 13.2   -14 48 52     1.616    2.589  158.9    8.1   255   10.7 
2025-07-28 00:00 UT   21 50 26.2   -14 53 43     1.610    2.588  160.0    7.7   255   10.7 
2025-07-29 00:00 UT   21 49 38.0   -14 58 39     1.605    2.587  161.2    7.3   256   10.7 
2025-07-30 00:00 UT   21 48 48.8   -15 03 39     1.599    2.585  162.4    6.8   256   10.6 
2025-07-31 00:00 UT   21 47 58.4   -15 08 43     1.594    2.584  163.5    6.4   256   10.6 
2025-08-01 00:00 UT   21 47 07.1   -15 13 50     1.589    2.582  164.7    5.9   257   10.6 
2025-08-02 00:00 UT   21 46 14.8   -15 19 00     1.585    2.581  165.9    5.5   258   10.5 
2025-08-03 00:00 UT   21 45 21.6   -15 24 13     1.581    2.580  167.1    5.1   258   10.5 
2025-08-04 00:00 UT   21 44 27.6   -15 29 29     1.577    2.578  168.2    4.6   259   10.5 
2025-08-05 00:00 UT   21 43 32.7   -15 34 46     1.573    2.577  169.4    4.1   261   10.4 
2025-08-06 00:00 UT   21 42 37.1   -15 40 05     1.569    2.575  170.6    3.7   262   10.4 
2025-08-07 00:00 UT   21 41 40.9   -15 45 25     1.566    2.574  171.8    3.2   264   10.4 
2025-08-08 00:00 UT   21 40 44.0   -15 50 47     1.563    2.572  172.9    2.8   266   10.3 
2025-08-09 00:00 UT   21 39 46.6   -15 56 08     1.560    2.571  174.1    2.3   269   10.3 
2025-08-10 00:00 UT   21 38 48.6   -16 01 30     1.558    2.569  175.2    1.9   274   10.3 
2025-08-11 00:00 UT   21 37 50.3   -16 06 52     1.556    2.568  176.3    1.5   281   10.2 
2025-08-12 00:00 UT   21 36 51.6   -16 12 12     1.554    2.566  177.3    1.1   294   10.2 
2025-08-13 00:00 UT   21 35 52.5   -16 17 32     1.552    2.565  178.0    0.8   318   10.2 
2025-08-14 00:00 UT   21 34 53.3   -16 22 51     1.551    2.563  178.1    0.8   354   10.2 
2025-08-15 00:00 UT   21 33 53.8   -16 28 08     1.550    2.562  177.5    1.0    22   10.2 
2025-08-16 00:00 UT   21 32 54.3   -16 33 23     1.549    2.560  176.6    1.4    38   10.2 
2025-08-17 00:00 UT   21 31 54.7   -16 38 36     1.548    2.559  175.5    1.8    46   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.