(71) Niobe
ephemeris date magn radius delta ra dec elong phase
Today28 Mar 202412.12.659 AU2.213 AU07h39m+22°22'105.5°21.2°
Opposition13 Jun 202510.62.341 AU1.419 AU17h21m-55°32'147.7°13.4°
(71) Niobe - 2024-03-28
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 Niobe are:

            e (Eccentricity)                : 0.1766717
            a (Semimajor axis)              : 2.7536097
            i (Inclination)                 : 23.24443
            Ω (Longitude of ascending node) : 315.91545
            ω (Argument of perihelion)      : 267.08732
            M (Mean anomaly)                : 291.74687
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 42.74596
            B (Latitude of perihelion)      : -23.21264
            P (Orbital period in years)     : 4.57            
        

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
2024-03-28 00:00 UT   07 39 47.7   +22 22 33     2.213    2.659  105.5   21.2   100   12.1 
2024-03-28 18:51 UT   07 40 02.6   +22 16 34     2.222    2.658  104.8   21.3   100   12.1 
2024-03-29 00:00 UT   07 40 06.8   +22 14 56     2.224    2.658  104.6   21.3   100   12.1 
2024-03-30 00:00 UT   07 40 27.5   +22 07 20     2.235    2.656  103.7   21.4   100   12.2 
2024-03-31 00:00 UT   07 40 49.7   +21 59 44     2.247    2.654  102.8   21.5   100   12.2 
2024-04-01 00:00 UT   07 41 13.4   +21 52 08     2.258    2.652  102.0   21.6   100   12.2 
2024-04-02 00:00 UT   07 41 38.6   +21 44 32     2.270    2.650  101.1   21.7   100   12.2 
2024-04-03 00:00 UT   07 42 05.3   +21 36 56     2.281    2.648  100.2   21.8   100   12.2 
2024-04-04 00:00 UT   07 42 33.4   +21 29 20     2.293    2.646   99.4   21.9   100   12.2 
2024-04-05 00:00 UT   07 43 02.9   +21 21 44     2.304    2.644   98.5   22.0   100   12.2 
2024-04-06 00:00 UT   07 43 33.8   +21 14 08     2.316    2.643   97.7   22.0   100   12.2 
2024-04-07 00:00 UT   07 44 06.0   +21 06 32     2.328    2.641   96.8   22.1   100   12.3 
2024-04-08 00:00 UT   07 44 39.7   +20 58 56     2.339    2.639   96.0   22.2   100   12.3 
2024-04-09 00:00 UT   07 45 14.6   +20 51 20     2.351    2.637   95.2   22.2   100   12.3 
2024-04-10 00:00 UT   07 45 50.9   +20 43 43     2.363    2.635   94.3   22.3   100   12.3 
2024-04-11 00:00 UT   07 46 28.4   +20 36 07     2.374    2.633   93.5   22.3   100   12.3 
2024-04-12 00:00 UT   07 47 07.2   +20 28 30     2.386    2.632   92.7   22.4   100   12.3 
2024-04-13 00:00 UT   07 47 47.3   +20 20 52     2.398    2.630   91.9   22.4   100   12.3 
2024-04-14 00:00 UT   07 48 28.6   +20 13 14     2.409    2.628   91.1   22.4   100   12.3 
2024-04-15 00:00 UT   07 49 11.0   +20 05 36     2.421    2.626   90.3   22.5   101   12.3 
2024-04-16 00:00 UT   07 49 54.6   +19 57 57     2.433    2.624   89.5   22.5   101   12.4 
2024-04-17 00:00 UT   07 50 39.4   +19 50 17     2.444    2.622   88.8   22.5   101   12.4 
2024-04-18 00:00 UT   07 51 25.3   +19 42 37     2.456    2.620   88.0   22.5   101   12.4 
2024-04-19 00:00 UT   07 52 12.3   +19 34 56     2.468    2.619   87.2   22.5   101   12.4 
2024-04-20 00:00 UT   07 53 00.3   +19 27 14     2.479    2.617   86.4   22.5   101   12.4 
2024-04-21 00:00 UT   07 53 49.5   +19 19 31     2.491    2.615   85.7   22.5   101   12.4 
2024-04-22 00:00 UT   07 54 39.6   +19 11 48     2.502    2.613   84.9   22.5   101   12.4 
2024-04-23 00:00 UT   07 55 30.8   +19 04 03     2.514    2.611   84.2   22.5   101   12.4 
2024-04-24 00:00 UT   07 56 22.9   +18 56 18     2.526    2.609   83.4   22.5   101   12.4 
2024-04-25 00:00 UT   07 57 16.1   +18 48 31     2.537    2.607   82.7   22.5   101   12.4 
2024-04-26 00:00 UT   07 58 10.2   +18 40 44     2.549    2.606   81.9   22.5   102   12.4 
2024-04-27 00:00 UT   07 59 05.2   +18 32 55     2.560    2.604   81.2   22.5   102   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.