(120) Lachesis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 Mar 2026	11.9	3.017 AU	2.027 AU	11h37m	-00°02'	174.7°	1.7°
Opposition	14 Mar 2026	11.8	3.016 AU	2.022 AU	11h34m	+00°08'	177.5°	0.8°

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 Lachesis are:

            e (Eccentricity)                : 0.0490001
            a (Semimajor axis)              : 3.1202628
            i (Inclination)                 : 6.94108
            Ω (Longitude of ascending node) : 340.54848
            ω (Argument of perihelion)      : 242.52130
            M (Mean anomaly)                : 294.79091
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 42.89688
            B (Latitude of perihelion)      : -6.15478
            P (Orbital period in years)     : 5.51            
        

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
2026-03-11 00:00 UT   11 37 22.5   +00 02 24     2.027    3.017  174.7    1.7   319   11.9 
2026-03-11 04:53 UT   11 37 12.6   +00 01 48     2.026    3.017  174.9    1.7   320   11.9 
2026-03-12 00:00 UT   11 36 33.9   +00 00 32     2.025    3.017  175.7    1.4   326   11.9 
2026-03-13 00:00 UT   11 35 45.2   +00 03 31     2.024    3.016  176.7    1.1   338   11.9 
2026-03-14 00:00 UT   11 34 56.4   +00 06 31     2.023    3.016  177.3    0.9   357   11.8 
2026-03-15 00:00 UT   11 34 07.5   +00 09 33     2.022    3.016  177.6    0.8    24   11.8 
2026-03-16 00:00 UT   11 33 18.7   +00 12 36     2.022    3.015  177.2    0.9    50   11.9 
2026-03-17 00:00 UT   11 32 29.9   +00 15 40     2.021    3.015  176.5    1.2    68   11.9 
2026-03-18 00:00 UT   11 31 41.1   +00 18 45     2.021    3.015  175.6    1.5    79   11.9 
2026-03-19 00:00 UT   11 30 52.6   +00 21 50     2.022    3.014  174.5    1.8    86   11.9 
2026-03-20 00:00 UT   11 30 04.3   +00 24 56     2.023    3.014  173.4    2.2    90   12.0 
2026-03-21 00:00 UT   11 29 16.2   +00 28 01     2.024    3.014  172.3    2.5    94   12.0 
2026-03-22 00:00 UT   11 28 28.4   +00 31 05     2.025    3.013  171.1    2.9    96   12.0 
2026-03-23 00:00 UT   11 27 41.1   +00 34 09     2.027    3.013  170.0    3.3    98   12.0 
2026-03-24 00:00 UT   11 26 54.1   +00 37 12     2.028    3.013  168.8    3.7    99   12.1 
2026-03-25 00:00 UT   11 26 07.6   +00 40 13     2.031    3.012  167.7    4.1   101   12.1 
2026-03-26 00:00 UT   11 25 21.7   +00 43 13     2.033    3.012  166.5    4.4   102   12.1 
2026-03-27 00:00 UT   11 24 36.3   +00 46 11     2.036    3.011  165.3    4.8   102   12.1 
2026-03-28 00:00 UT   11 23 51.5   +00 49 06     2.039    3.011  164.2    5.2   103   12.2 
2026-03-29 00:00 UT   11 23 07.4   +00 51 59     2.042    3.011  163.0    5.6   104   12.2 
2026-03-30 00:00 UT   11 22 24.0   +00 54 50     2.046    3.010  161.8    5.9   104   12.2 
2026-03-31 00:00 UT   11 21 41.3   +00 57 38     2.049    3.010  160.7    6.3   105   12.2 
2026-04-01 00:00 UT   11 20 59.4   +01 00 22     2.053    3.010  159.5    6.7   105   12.2 
2026-04-02 00:00 UT   11 20 18.3   +01 03 03     2.058    3.009  158.4    7.0   106   12.3 
2026-04-03 00:00 UT   11 19 38.1   +01 05 41     2.062    3.009  157.2    7.4   106   12.3 
2026-04-04 00:00 UT   11 18 58.7   +01 08 15     2.067    3.009  156.1    7.7   106   12.3 
2026-04-05 00:00 UT   11 18 20.3   +01 10 45     2.072    3.008  154.9    8.1   107   12.3 
2026-04-06 00:00 UT   11 17 42.8   +01 13 10     2.078    3.008  153.8    8.4   107   12.3 
2026-04-07 00:00 UT   11 17 06.3   +01 15 32     2.083    3.008  152.7    8.8   107   12.4 
2026-04-08 00:00 UT   11 16 30.8   +01 17 49     2.089    3.007  151.5    9.1   107   12.4 
2026-04-09 00:00 UT   11 15 56.4   +01 20 01     2.095    3.007  150.4    9.5   107   12.4 
2026-04-10 00:00 UT   11 15 23.0   +01 22 08     2.102    3.007  149.3    9.8   108   12.4 

    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.