(345) Tercidina
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	21 Jul 2026	12.3	2.436 AU	1.446 AU	19h56m	-03°50'	163.3°	6.9°
Opposition	22 Jul 2026	12.3	2.436 AU	1.445 AU	19h55m	-03°54'	163.4°	6.8°

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 Tercidina are:

            e (Eccentricity)                : 0.0611443
            a (Semimajor axis)              : 2.3255766
            i (Inclination)                 : 9.74273
            Ω (Longitude of ascending node) : 212.56978
            ω (Argument of perihelion)      : 230.31365
            M (Mean anomaly)                : 209.27030
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 262.47385
            B (Latitude of perihelion)      : -7.48271
            P (Orbital period in years)     : 3.55            
        

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
2026-07-21 00:00 UT   19 56 59.1   -03 50 52     1.446    2.436  163.3    6.9   178   12.3 
2026-07-21 17:37 UT   19 56 16.5   -03 52 36     1.445    2.436  163.4    6.9   175   12.3 
2026-07-22 00:00 UT   19 56 01.0   -03 53 15     1.445    2.436  163.4    6.8   173   12.3 
2026-07-23 00:00 UT   19 55 03.0   -03 55 49     1.445    2.436  163.4    6.8   169   12.3 
2026-07-24 00:00 UT   19 54 05.1   -03 58 33     1.444    2.435  163.4    6.8   165   12.3 
2026-07-25 00:00 UT   19 53 07.3   -04 01 28     1.444    2.435  163.3    6.9   161   12.3 
2026-07-26 00:00 UT   19 52 09.8   -04 04 32     1.445    2.434  163.1    7.0   157   12.3 
2026-07-27 00:00 UT   19 51 12.7   -04 07 46     1.445    2.434  162.8    7.1   153   12.3 
2026-07-28 00:00 UT   19 50 15.9   -04 11 10     1.446    2.434  162.5    7.2   149   12.3 
2026-07-29 00:00 UT   19 49 19.5   -04 14 43     1.447    2.433  162.1    7.4   146   12.3 
2026-07-30 00:00 UT   19 48 23.7   -04 18 25     1.448    2.433  161.6    7.6   142   12.3 
2026-07-31 00:00 UT   19 47 28.5   -04 22 15     1.450    2.432  161.1    7.8   139   12.3 
2026-08-01 00:00 UT   19 46 33.9   -04 26 14     1.451    2.432  160.5    8.0   136   12.3 
2026-08-02 00:00 UT   19 45 40.0   -04 30 21     1.453    2.431  159.8    8.3   133   12.3 
2026-08-03 00:00 UT   19 44 46.9   -04 34 36     1.456    2.431  159.2    8.5   130   12.4 
2026-08-04 00:00 UT   19 43 54.7   -04 38 59     1.458    2.430  158.4    8.8   128   12.4 
2026-08-05 00:00 UT   19 43 03.3   -04 43 29     1.461    2.430  157.7    9.1   125   12.4 
2026-08-06 00:00 UT   19 42 12.9   -04 48 06     1.464    2.430  156.9    9.4   123   12.4 
2026-08-07 00:00 UT   19 41 23.4   -04 52 49     1.467    2.429  156.1    9.7   121   12.4 
2026-08-08 00:00 UT   19 40 35.1   -04 57 40     1.470    2.429  155.2   10.1   119   12.4 
2026-08-09 00:00 UT   19 39 47.9   -05 02 36     1.474    2.428  154.4   10.4   117   12.5 
2026-08-10 00:00 UT   19 39 01.8   -05 07 37     1.478    2.428  153.5   10.7   115   12.5 
2026-08-11 00:00 UT   19 38 17.0   -05 12 45     1.482    2.427  152.6   11.1   114   12.5 
2026-08-12 00:00 UT   19 37 33.5   -05 17 57     1.486    2.427  151.7   11.4   112   12.5 
2026-08-13 00:00 UT   19 36 51.3   -05 23 14     1.491    2.426  150.8   11.8   111   12.5 
2026-08-14 00:00 UT   19 36 10.5   -05 28 35     1.496    2.426  149.9   12.1   110   12.6 
2026-08-15 00:00 UT   19 35 31.2   -05 34 01     1.501    2.425  148.9   12.4   108   12.6 
2026-08-16 00:00 UT   19 34 53.3   -05 39 29     1.506    2.425  148.0   12.8   107   12.6 
2026-08-17 00:00 UT   19 34 16.9   -05 45 02     1.512    2.424  147.0   13.1   106   12.6 
2026-08-18 00:00 UT   19 33 42.0   -05 50 37     1.517    2.424  146.1   13.5   105   12.6 
2026-08-19 00:00 UT   19 33 08.7   -05 56 14     1.523    2.424  145.1   13.8   104   12.7 
2026-08-20 00:00 UT   19 32 37.1   -06 01 54     1.529    2.423  144.2   14.1   103   12.7 

    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.