(134) Sophrosyne
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	16 Sep 2025	12.4	2.398 AU	1.467 AU	01h04m	+15°10'	151.4°	11.6°
Opposition	8 Oct 2025	11.9	2.375 AU	1.384 AU	00h42m	+15°26'	170.0°	4.2°

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 Sophrosyne are:

            e (Eccentricity)                : 0.1151095
            a (Semimajor axis)              : 2.5632091
            i (Inclination)                 : 11.61186
            Ω (Longitude of ascending node) : 345.83571
            ω (Argument of perihelion)      : 85.73505
            M (Mean anomaly)                : 277.23042
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 71.48199
            B (Latitude of perihelion)      : 11.57926
            P (Orbital period in years)     : 4.10            
        

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
2025-09-16 00:00 UT   01 04 19.3   +15 10 47     1.467    2.398  151.4   11.6   233   12.4 
2025-09-16 02:24 UT   01 04 14.6   +15 11 03     1.466    2.398  151.5   11.5   233   12.4 
2025-09-17 00:00 UT   01 03 31.6   +15 13 19     1.460    2.397  152.5   11.2   232   12.4 
2025-09-18 00:00 UT   01 02 42.4   +15 15 39     1.454    2.396  153.5   10.8   231   12.4 
2025-09-19 00:00 UT   01 01 51.9   +15 17 50     1.449    2.395  154.6   10.4   230   12.3 
2025-09-20 00:00 UT   01 00 60.0   +15 19 50     1.443    2.394  155.7   10.0   229   12.3 
2025-09-21 00:00 UT   01 00 06.9   +15 21 39     1.438    2.393  156.7    9.5   227   12.3 
2025-09-22 00:00 UT   00 59 12.6   +15 23 18     1.432    2.392  157.8    9.1   226   12.3 
2025-09-23 00:00 UT   00 58 17.1   +15 24 46     1.428    2.391  158.8    8.7   225   12.2 
2025-09-24 00:00 UT   00 57 20.6   +15 26 04     1.423    2.390  159.8    8.3   223   12.2 
2025-09-25 00:00 UT   00 56 23.1   +15 27 11     1.418    2.389  160.8    7.9   221   12.2 
2025-09-26 00:00 UT   00 55 24.6   +15 28 08     1.414    2.388  161.8    7.5   219   12.2 
2025-09-27 00:00 UT   00 54 25.3   +15 28 54     1.410    2.387  162.8    7.1   217   12.1 
2025-09-28 00:00 UT   00 53 25.1   +15 29 31     1.407    2.386  163.8    6.7   214   12.1 
2025-09-29 00:00 UT   00 52 24.2   +15 29 57     1.403    2.384  164.7    6.4   211   12.1 
2025-09-30 00:00 UT   00 51 22.7   +15 30 14     1.400    2.383  165.6    6.0   208   12.1 
2025-10-01 00:00 UT   00 50 20.6   +15 30 20     1.397    2.382  166.4    5.7   204   12.0 
2025-10-02 00:00 UT   00 49 18.0   +15 30 17     1.395    2.381  167.2    5.3   200   12.0 
2025-10-03 00:00 UT   00 48 15.0   +15 30 05     1.392    2.380  167.9    5.0   195   12.0 
2025-10-04 00:00 UT   00 47 11.6   +15 29 43     1.390    2.379  168.6    4.8   190   12.0 
2025-10-05 00:00 UT   00 46 08.0   +15 29 12     1.389    2.378  169.1    4.6   184   12.0 
2025-10-06 00:00 UT   00 45 04.2   +15 28 33     1.387    2.377  169.5    4.4   178   11.9 
2025-10-07 00:00 UT   00 44 00.3   +15 27 45     1.386    2.376  169.8    4.3   171   11.9 
2025-10-08 00:00 UT   00 42 56.4   +15 26 49     1.385    2.375  170.0    4.2   164   11.9 
2025-10-09 00:00 UT   00 41 52.5   +15 25 44     1.384    2.374  170.0    4.2   157   11.9 
2025-10-10 00:00 UT   00 40 48.8   +15 24 32     1.384    2.373  169.8    4.3   150   11.9 
2025-10-11 00:00 UT   00 39 45.3   +15 23 12     1.383    2.372  169.5    4.4   143   11.9 
2025-10-12 00:00 UT   00 38 42.1   +15 21 45     1.383    2.371  169.1    4.6   137   11.9 
2025-10-13 00:00 UT   00 37 39.3   +15 20 11     1.384    2.370  168.6    4.8   131   12.0 
2025-10-14 00:00 UT   00 36 36.9   +15 18 31     1.384    2.369  167.9    5.0   126   12.0 
2025-10-15 00:00 UT   00 35 35.1   +15 16 44     1.385    2.368  167.2    5.3   121   12.0 
2025-10-16 00:00 UT   00 34 33.9   +15 14 52     1.386    2.367  166.4    5.7   117   12.0 

    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.