(128) Nemesis
ephemeris date magn radius delta ra dec elong phase
Opposition17 Sep 202210.92.424 AU1.429 AU23h56m-11°53'169.5°4.3°
Today6 Oct 202211.12.414 AU1.466 AU23h41m-12°57'156.0°9.7°
(128) Nemesis - 2022-10-06
astro.vanbuitenen.nl


 
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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 Nemesis are:

            e (Eccentricity)                : 0.1283252
            a (Semimajor axis)              : 2.7509231
            i (Inclination)                 : 6.24371
            Ω (Longitude of ascending node) : 76.20421
            ω (Argument of perihelion)      : 303.20101
            M (Mean anomaly)                : 332.07251
            Epoch                           : 2022 Aug 09

            L (Longitude of perihelion)     : 19.56159
            B (Latitude of perihelion)      : -5.22134
            P (Orbital period in years)     : 4.56            
        

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
2022-10-06 00:00 UT   23 41 24.3   -12 57 36     1.466    2.414  156.0    9.7    43   11.1 
2022-10-06 18:11 UT   23 40 52.3   -12 58 51     1.470    2.414  155.3   10.0    44   11.2 
2022-10-07 00:00 UT   23 40 42.2   -12 59 13     1.471    2.414  155.0   10.1    44   11.2 
2022-10-08 00:00 UT   23 40 01.2   -13 00 37     1.475    2.414  154.0   10.5    45   11.2 
2022-10-09 00:00 UT   23 39 21.2   -13 01 48     1.480    2.413  152.9   10.9    46   11.2 
2022-10-10 00:00 UT   23 38 42.4   -13 02 47     1.485    2.413  151.9   11.2    47   11.2 
2022-10-11 00:00 UT   23 38 04.7   -13 03 33     1.491    2.412  150.8   11.6    48   11.3 
2022-10-12 00:00 UT   23 37 28.3   -13 04 06     1.496    2.412  149.8   12.0    49   11.3 
2022-10-13 00:00 UT   23 36 53.1   -13 04 26     1.502    2.411  148.8   12.4    50   11.3 
2022-10-14 00:00 UT   23 36 19.2   -13 04 32     1.508    2.411  147.7   12.8    51   11.3 
2022-10-15 00:00 UT   23 35 46.6   -13 04 26     1.514    2.411  146.7   13.1    51   11.3 
2022-10-16 00:00 UT   23 35 15.3   -13 04 08     1.521    2.410  145.6   13.5    52   11.4 
2022-10-17 00:00 UT   23 34 45.5   -13 03 36     1.527    2.410  144.6   13.9    53   11.4 
2022-10-18 00:00 UT   23 34 17.1   -13 02 51     1.534    2.409  143.5   14.2    53   11.4 
2022-10-19 00:00 UT   23 33 50.1   -13 01 53     1.541    2.409  142.5   14.6    54   11.4 
2022-10-20 00:00 UT   23 33 24.6   -13 00 43     1.548    2.409  141.5   14.9    55   11.5 
2022-10-21 00:00 UT   23 33 00.7   -12 59 20     1.556    2.408  140.5   15.3    55   11.5 
2022-10-22 00:00 UT   23 32 38.2   -12 57 44     1.563    2.408  139.4   15.6    56   11.5 
2022-10-23 00:00 UT   23 32 17.4   -12 55 55     1.571    2.408  138.4   15.9    56   11.5 
2022-10-24 00:00 UT   23 31 58.1   -12 53 54     1.579    2.407  137.4   16.2    56   11.5 
2022-10-25 00:00 UT   23 31 40.4   -12 51 41     1.587    2.407  136.4   16.6    57   11.6 
2022-10-26 00:00 UT   23 31 24.3   -12 49 15     1.595    2.407  135.4   16.9    57   11.6 
2022-10-27 00:00 UT   23 31 09.9   -12 46 37     1.604    2.406  134.4   17.2    58   11.6 
2022-10-28 00:00 UT   23 30 57.1   -12 43 47     1.612    2.406  133.4   17.5    58   11.6 
2022-10-29 00:00 UT   23 30 45.9   -12 40 46     1.621    2.406  132.4   17.8    58   11.7 
2022-10-30 00:00 UT   23 30 36.4   -12 37 32     1.630    2.405  131.4   18.0    59   11.7 
2022-10-31 00:00 UT   23 30 28.6   -12 34 06     1.639    2.405  130.4   18.3    59   11.7 
2022-11-01 00:00 UT   23 30 22.4   -12 30 30     1.648    2.405  129.5   18.6    59   11.7 
2022-11-02 00:00 UT   23 30 17.9   -12 26 42     1.658    2.404  128.5   18.8    60   11.7 
2022-11-03 00:00 UT   23 30 15.0   -12 22 42     1.667    2.404  127.5   19.1    60   11.8 
2022-11-04 00:00 UT   23 30 13.8   -12 18 32     1.677    2.404  126.6   19.3    60   11.8 
2022-11-05 00:00 UT   23 30 14.2   -12 14 11     1.686    2.404  125.6   19.6    61   11.8 


    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.