(172) Baucis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	8 Nov 2025	13.0	2.109 AU	1.973 AU	20h45m	-16°59'	83.8°	27.8°
Opposition	31 Dec 2026	12.1	2.526 AU	1.558 AU	06h46m	+36°01'	167.0°	5.0°

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 Baucis are:

            e (Eccentricity)                : 0.1141328
            a (Semimajor axis)              : 2.3797192
            i (Inclination)                 : 10.01600
            Ω (Longitude of ascending node) : 331.88917
            ω (Argument of perihelion)      : 359.19864
            M (Mean anomaly)                : 8.29405
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 331.10002
            B (Latitude of perihelion)      : -0.13937
            P (Orbital period in years)     : 3.67            
        

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
2025-11-08 00:00 UT   20 45 37.4   -16 59 49     1.973    2.109   83.8   27.8    75   13.0 
2025-11-08 07:25 UT   20 46 04.7   -16 56 57     1.976    2.109   83.6   27.8    75   13.0 
2025-11-09 00:00 UT   20 47 05.8   -16 50 30     1.984    2.109   83.1   27.8    75   13.1 
2025-11-10 00:00 UT   20 48 34.8   -16 41 08     1.996    2.110   82.5   27.7    74   13.1 
2025-11-11 00:00 UT   20 50 04.5   -16 31 42     2.008    2.110   81.9   27.7    74   13.1 
2025-11-12 00:00 UT   20 51 34.9   -16 22 13     2.019    2.110   81.3   27.6    74   13.1 
2025-11-13 00:00 UT   20 53 05.9   -16 12 40     2.031    2.110   80.7   27.6    74   13.1 
2025-11-14 00:00 UT   20 54 37.5   -16 03 04     2.042    2.110   80.1   27.5    74   13.1 
2025-11-15 00:00 UT   20 56 09.7   -15 53 25     2.054    2.110   79.5   27.4    74   13.1 
2025-11-16 00:00 UT   20 57 42.6   -15 43 42     2.065    2.111   78.9   27.4    74   13.1 
2025-11-17 00:00 UT   20 59 16.0   -15 33 56     2.077    2.111   78.3   27.3    73   13.1 
2025-11-18 00:00 UT   21 00 50.0   -15 24 06     2.089    2.111   77.7   27.2    73   13.2 
2025-11-19 00:00 UT   21 02 24.5   -15 14 13     2.100    2.111   77.1   27.1    73   13.2 
2025-11-20 00:00 UT   21 03 59.6   -15 04 16     2.112    2.111   76.5   27.1    73   13.2 
2025-11-21 00:00 UT   21 05 35.2   -14 54 16     2.123    2.112   75.9   27.0    73   13.2 
2025-11-22 00:00 UT   21 07 11.4   -14 44 11     2.134    2.112   75.3   26.9    73   13.2 
2025-11-23 00:00 UT   21 08 48.0   -14 34 04     2.146    2.112   74.7   26.8    73   13.2 
2025-11-24 00:00 UT   21 10 25.1   -14 23 52     2.157    2.112   74.1   26.7    72   13.2 
2025-11-25 00:00 UT   21 12 02.7   -14 13 37     2.169    2.113   73.5   26.6    72   13.2 
2025-11-26 00:00 UT   21 13 40.8   -14 03 19     2.180    2.113   72.9   26.5    72   13.2 
2025-11-27 00:00 UT   21 15 19.2   -13 52 57     2.191    2.113   72.4   26.4    72   13.2 
2025-11-28 00:00 UT   21 16 58.2   -13 42 31     2.203    2.114   71.8   26.3    72   13.2 

    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.