(164121) 2003 YT1
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	19 Sep 2026	19.3	1.278 AU	1.752 AU	13h47m	-33°57'	46.0°	34.4°

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 2003 YT1 are:

            e (Eccentricity)                : 0.2920960
            a (Semimajor axis)              : 1.1099069
            i (Inclination)                 : 44.05781
            Ω (Longitude of ascending node) : 38.30847
            ω (Argument of perihelion)      : 91.01207
            M (Mean anomaly)                : 20.86395
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : -50.28335
            B (Latitude of perihelion)      : 44.04916
            P (Orbital period in years)     : 1.17            
        

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
2026-09-19 00:00 UT   13 47 52.1   -33 57 49     1.752    1.278   46.0   34.4   134   19.3 
2026-09-19 13:41 UT   13 49 26.4   -34 13 31     1.755    1.280   45.9   34.3   135   19.3 
2026-09-20 00:00 UT   13 50 37.8   -34 25 18     1.758    1.281   45.9   34.2   135   19.3 
2026-09-21 00:00 UT   13 53 24.8   -34 52 30     1.765    1.285   45.8   34.1   135   19.3 
2026-09-22 00:00 UT   13 56 13.1   -35 19 24     1.771    1.288   45.7   33.9   135   19.4 
2026-09-23 00:00 UT   13 59 02.7   -35 46 02     1.778    1.292   45.5   33.7   135   19.4 
2026-09-24 00:00 UT   14 01 53.8   -36 12 22     1.784    1.295   45.4   33.5   136   19.4 
2026-09-25 00:00 UT   14 04 46.3   -36 38 24     1.790    1.298   45.3   33.3   136   19.4 
2026-09-26 00:00 UT   14 07 40.3   -37 04 10     1.796    1.302   45.2   33.1   136   19.4 
2026-09-27 00:00 UT   14 10 35.9   -37 29 38     1.802    1.305   45.1   33.0   136   19.4 
2026-09-28 00:00 UT   14 13 32.9   -37 54 49     1.808    1.308   45.0   32.8   136   19.4 
2026-09-29 00:00 UT   14 16 31.6   -38 19 43     1.814    1.311   44.9   32.6   136   19.4 
2026-09-30 00:00 UT   14 19 31.9   -38 44 19     1.820    1.314   44.8   32.5   137   19.4 

    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.