(364) Isara
ephemeris date magn radius delta ra dec elong phase
Today22 Oct 202514.92.446 AU3.424 AU13h22m-04°03'9.0°3.6°
Opposition28 May 202613.22.546 AU1.537 AU16h28m-15°31'173.8°2.5°
(364) Isara - 2025-10-22
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 Isara are:

            e (Eccentricity)                : 0.1492100
            a (Semimajor axis)              : 2.2202422
            i (Inclination)                 : 6.00618
            Ω (Longitude of ascending node) : 105.50189
            ω (Argument of perihelion)      : 312.97938
            M (Mean anomaly)                : 135.53601
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 58.63860
            B (Latitude of perihelion)      : -4.39037
            P (Orbital period in years)     : 3.31            
        

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
2025-10-22 00:00 UT   13 22 27.7   -04 03 43     3.424    2.446    9.0    3.6   320   14.9 
2025-10-22 18:30 UT   13 23 46.7   -04 11 30     3.423    2.446    9.4    3.8   319   14.9 
2025-10-23 00:00 UT   13 24 10.2   -04 13 49     3.423    2.447    9.5    3.8   319   14.9 
2025-10-24 00:00 UT   13 25 52.6   -04 23 52     3.422    2.448   10.0    4.0   317   14.9 
2025-10-25 00:00 UT   13 27 35.0   -04 33 52     3.420    2.449   10.4    4.2   316   14.9 
2025-10-26 00:00 UT   13 29 17.4   -04 43 50     3.419    2.450   10.9    4.4   315   14.9 
2025-10-27 00:00 UT   13 30 59.8   -04 53 45     3.418    2.451   11.4    4.6   313   14.9 
2025-10-28 00:00 UT   13 32 42.1   -05 03 37     3.416    2.452   11.9    4.8   312   14.9 
2025-10-29 00:00 UT   13 34 24.4   -05 13 27     3.414    2.453   12.4    5.0   311   15.0 
2025-10-30 00:00 UT   13 36 06.7   -05 23 14     3.412    2.455   13.0    5.2   310   15.0 
2025-10-31 00:00 UT   13 37 49.0   -05 32 57     3.410    2.456   13.5    5.4   310   15.0 
2025-11-01 00:00 UT   13 39 31.2   -05 42 38     3.408    2.457   14.0    5.6   309   15.0 
2025-11-02 00:00 UT   13 41 13.5   -05 52 16     3.406    2.458   14.5    5.8   308   15.0 
2025-11-03 00:00 UT   13 42 55.6   -06 01 50     3.404    2.459   15.0    6.0   307   15.0 
2025-11-04 00:00 UT   13 44 37.8   -06 11 22     3.401    2.460   15.6    6.2   307   15.0 
2025-11-05 00:00 UT   13 46 19.9   -06 20 51     3.398    2.461   16.1    6.4   306   15.0 
2025-11-06 00:00 UT   13 48 02.0   -06 30 16     3.396    2.462   16.6    6.6   306   15.0 
2025-11-07 00:00 UT   13 49 44.0   -06 39 39     3.393    2.463   17.2    6.8   305   15.0 
2025-11-08 00:00 UT   13 51 26.0   -06 48 58     3.390    2.464   17.7    7.0   304   15.0 
2025-11-09 00:00 UT   13 53 08.0   -06 58 14     3.387    2.465   18.2    7.2   304   15.1 


    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.