(654) Zelinda
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	17 Jul 2024	12.4	2.794 AU	1.785 AU	19h45m	-12°24'	171.3°	3.2°
Today	27 Jul 2024	12.6	2.801 AU	1.805 AU	19h34m	-12°06'	165.8°	5.1°

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 Zelinda are:

            e (Eccentricity)                : 0.2312999
            a (Semimajor axis)              : 2.2971101
            i (Inclination)                 : 18.09728
            Ω (Longitude of ascending node) : 278.32490
            ω (Argument of perihelion)      : 214.56272
            M (Mean anomaly)                : 180.49572
            Epoch                           : 2024 Oct 17

            L (Longitude of perihelion)     : 311.54227
            B (Latitude of perihelion)      : -10.14987
            P (Orbital period in years)     : 3.48            
        

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
2024-07-27 00:00 UT   19 34 32.2   -12 06 19     1.805    2.801  165.8    5.1   122   12.6 
2024-07-27 04:26 UT   19 34 20.5   -12 06 00     1.806    2.801  165.6    5.2   121   12.6 
2024-07-28 00:00 UT   19 33 28.7   -12 04 41     1.809    2.802  164.8    5.5   119   12.6 
2024-07-29 00:00 UT   19 32 25.9   -12 03 08     1.813    2.802  163.8    5.8   116   12.6 
2024-07-30 00:00 UT   19 31 23.9   -12 01 37     1.817    2.803  162.8    6.2   114   12.7 
2024-07-31 00:00 UT   19 30 22.7   -12 00 11     1.821    2.804  161.7    6.5   112   12.7 
2024-08-01 00:00 UT   19 29 22.5   -11 58 47     1.826    2.804  160.7    6.9   111   12.7 
2024-08-02 00:00 UT   19 28 23.2   -11 57 27     1.831    2.805  159.6    7.2   109   12.7 
2024-08-03 00:00 UT   19 27 25.0   -11 56 10     1.836    2.806  158.6    7.6   108   12.7 
2024-08-04 00:00 UT   19 26 27.8   -11 54 56     1.842    2.806  157.5    8.0   106   12.8 
2024-08-05 00:00 UT   19 25 31.8   -11 53 45     1.848    2.807  156.4    8.3   105   12.8 
2024-08-06 00:00 UT   19 24 37.0   -11 52 37     1.854    2.807  155.3    8.7   104   12.8 
2024-08-07 00:00 UT   19 23 43.3   -11 51 33     1.860    2.808  154.2    9.0   103   12.8 
2024-08-08 00:00 UT   19 22 50.9   -11 50 31     1.866    2.809  153.1    9.4   102   12.9 
2024-08-09 00:00 UT   19 21 59.8   -11 49 31     1.873    2.809  152.0    9.7   102   12.9 
2024-08-10 00:00 UT   19 21 10.1   -11 48 35     1.880    2.810  150.9   10.1   101   12.9 
2024-08-11 00:00 UT   19 20 21.7   -11 47 41     1.887    2.810  149.8   10.4   100   12.9 
2024-08-12 00:00 UT   19 19 34.7   -11 46 50     1.895    2.811  148.8   10.8   100   12.9 
2024-08-13 00:00 UT   19 18 49.1   -11 46 01     1.903    2.811  147.7   11.1    99   13.0 
2024-08-14 00:00 UT   19 18 05.0   -11 45 15     1.910    2.812  146.6   11.4    98   13.0 
2024-08-15 00:00 UT   19 17 22.4   -11 44 30     1.919    2.812  145.5   11.8    98   13.0 
2024-08-16 00:00 UT   19 16 41.2   -11 43 48     1.927    2.813  144.4   12.1    97   13.0 
2024-08-17 00:00 UT   19 16 01.6   -11 43 09     1.936    2.813  143.3   12.4    97   13.1 
2024-08-18 00:00 UT   19 15 23.5   -11 42 31     1.944    2.814  142.3   12.7    96   13.1 
2024-08-19 00:00 UT   19 14 47.0   -11 41 55     1.953    2.814  141.2   13.0    96   13.1 
2024-08-20 00:00 UT   19 14 12.0   -11 41 21     1.962    2.815  140.1   13.3    96   13.1 
2024-08-21 00:00 UT   19 13 38.6   -11 40 49     1.972    2.815  139.1   13.6    95   13.1 
2024-08-22 00:00 UT   19 13 06.8   -11 40 19     1.981    2.816  138.0   13.9    95   13.2 
2024-08-23 00:00 UT   19 12 36.6   -11 39 50     1.991    2.816  137.0   14.2    94   13.2 
2024-08-24 00:00 UT   19 12 08.0   -11 39 23     2.001    2.817  135.9   14.5    94   13.2 
2024-08-25 00:00 UT   19 11 41.0   -11 38 57     2.011    2.817  134.9   14.7    94   13.2 
2024-08-26 00:00 UT   19 11 15.6   -11 38 33     2.022    2.818  133.9   15.0    93   13.3 

    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.