(172) Baucis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 May 2025	12.8	2.201 AU	1.699 AU	20h37m	-29°29'	105.8°	26.2°
Opposition	24 Jul 2025	11.0	2.137 AU	1.129 AU	20h25m	-29°10'	170.3°	4.6°

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)                : 0.1142571
            a (Semimajor axis)              : 2.3800398
            i (Inclination)                 : 10.01529
            Ω (Longitude of ascending node) : 331.89123
            ω (Argument of perihelion)      : 359.20037
            M (Mean anomaly)                : 314.60480
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 331.10378
            B (Latitude of perihelion)      : -0.13906
            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. 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
2025-05-11 00:00 UT   20 37 15.2   -29 29 03     1.699    2.201  105.8   26.2   258   12.8 
2025-05-11 15:35 UT   20 37 54.4   -29 27 56     1.692    2.200  106.3   26.1   258   12.8 
2025-05-12 00:00 UT   20 38 15.3   -29 27 21     1.687    2.200  106.5   26.1   258   12.8 
2025-05-13 00:00 UT   20 39 14.0   -29 25 41     1.676    2.199  107.3   26.0   258   12.7 
2025-05-14 00:00 UT   20 40 11.2   -29 24 05     1.664    2.197  108.0   25.9   258   12.7 
2025-05-15 00:00 UT   20 41 06.8   -29 22 33     1.652    2.196  108.7   25.8   259   12.7 
2025-05-16 00:00 UT   20 42 00.9   -29 21 04     1.640    2.195  109.5   25.7   259   12.7 
2025-05-17 00:00 UT   20 42 53.4   -29 19 38     1.629    2.194  110.2   25.6   259   12.7 
2025-05-18 00:00 UT   20 43 44.3   -29 18 16     1.617    2.193  111.0   25.5   259   12.6 
2025-05-19 00:00 UT   20 44 33.5   -29 16 57     1.606    2.192  111.8   25.4   259   12.6 
2025-05-20 00:00 UT   20 45 21.1   -29 15 43     1.594    2.191  112.5   25.2   259   12.6 
2025-05-21 00:00 UT   20 46 07.0   -29 14 32     1.583    2.190  113.3   25.1   259   12.6 
2025-05-22 00:00 UT   20 46 51.2   -29 13 26     1.572    2.189  114.1   25.0   259   12.6 
2025-05-23 00:00 UT   20 47 33.6   -29 12 23     1.560    2.188  114.9   24.8   259   12.5 
2025-05-24 00:00 UT   20 48 14.2   -29 11 25     1.549    2.187  115.7   24.7   260   12.5 
2025-05-25 00:00 UT   20 48 53.1   -29 10 31     1.538    2.186  116.5   24.5   260   12.5 
2025-05-26 00:00 UT   20 49 30.1   -29 09 41     1.527    2.186  117.3   24.3   260   12.5 
2025-05-27 00:00 UT   20 50 05.3   -29 08 55     1.516    2.185  118.1   24.2   260   12.4 
2025-05-28 00:00 UT   20 50 38.6   -29 08 13     1.506    2.184  118.9   24.0   260   12.4 
2025-05-29 00:00 UT   20 51 10.0   -29 07 36     1.495    2.183  119.7   23.8   260   12.4 
2025-05-30 00:00 UT   20 51 39.5   -29 07 03     1.484    2.182  120.5   23.6   261   12.4 
2025-05-31 00:00 UT   20 52 07.0   -29 06 34     1.474    2.181  121.4   23.4   261   12.4 
2025-06-01 00:00 UT   20 52 32.6   -29 06 10     1.463    2.180  122.2   23.2   261   12.3 
2025-06-02 00:00 UT   20 52 56.2   -29 05 50     1.453    2.179  123.1   23.0   261   12.3 
2025-06-03 00:00 UT   20 53 17.8   -29 05 34     1.443    2.178  123.9   22.7   261   12.3 
2025-06-04 00:00 UT   20 53 37.4   -29 05 21     1.433    2.177  124.8   22.5   262   12.3 
2025-06-05 00:00 UT   20 53 55.0   -29 05 13     1.423    2.176  125.7   22.3   262   12.2 
2025-06-06 00:00 UT   20 54 10.4   -29 05 09     1.413    2.175  126.5   22.0   262   12.2 
2025-06-07 00:00 UT   20 54 23.9   -29 05 09     1.403    2.174  127.4   21.8   262   12.2 
2025-06-08 00:00 UT   20 54 35.2   -29 05 13     1.393    2.173  128.3   21.5   263   12.2 
2025-06-09 00:00 UT   20 54 44.4   -29 05 20     1.384    2.172  129.2   21.2   263   12.1 
2025-06-10 00:00 UT   20 54 51.5   -29 05 31     1.374    2.172  130.1   21.0   263   12.1 

    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.