1991 TT
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	27 Jan 2026	26.8	1.187 AU	0.489 AU	12h42m	-32°57'	101.9°	54.3°

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 1991 TT are:

            e (Eccentricity)                : 0.1616993
            a (Semimajor axis)              : 1.1948677
            i (Inclination)                 : 14.78158
            Ω (Longitude of ascending node) : 192.31022
            ω (Argument of perihelion)      : 218.07009
            M (Mean anomaly)                : 27.71753
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 229.44818
            B (Latitude of perihelion)      : -9.05152
            P (Orbital period in years)     : 1.31            
        

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
2026-01-27 00:00 UT   12 42 09.4   -32 57 02     0.489    1.187  101.9   54.3   302   26.8 
2026-01-27 16:27 UT   12 43 07.4   -32 57 46     0.487    1.188  102.4   54.0   302   26.8 
2026-01-28 00:00 UT   12 43 33.7   -32 58 01     0.486    1.189  102.6   53.9   302   26.8 
2026-01-29 00:00 UT   12 44 55.5   -32 58 29     0.482    1.192  103.2   53.6   302   26.8 
2026-01-30 00:00 UT   12 46 14.9   -32 58 24     0.479    1.194  103.9   53.2   302   26.7 
2026-01-31 00:00 UT   12 47 31.7   -32 57 47     0.475    1.197  104.6   52.8   303   26.7 
2026-02-01 00:00 UT   12 48 45.9   -32 56 35     0.472    1.199  105.3   52.4   303   26.7 
2026-02-02 00:00 UT   12 49 57.4   -32 54 49     0.468    1.202  106.0   52.0   303   26.7 
2026-02-03 00:00 UT   12 51 06.1   -32 52 27     0.464    1.204  106.7   51.6   303   26.6 
2026-02-04 00:00 UT   12 52 12.0   -32 49 28     0.461    1.207  107.5   51.2   304   26.6 
2026-02-05 00:00 UT   12 53 15.0   -32 45 52     0.457    1.209  108.2   50.7   304   26.6 
2026-02-06 00:00 UT   12 54 15.0   -32 41 37     0.453    1.212  109.0   50.3   304   26.6 
2026-02-07 00:00 UT   12 55 11.9   -32 36 41     0.449    1.214  109.8   49.8   305   26.5 
2026-02-08 00:00 UT   12 56 05.7   -32 31 05     0.445    1.217  110.6   49.3   305   26.5 
2026-02-09 00:00 UT   12 56 56.2   -32 24 46     0.442    1.219  111.4   48.9   305   26.5 
2026-02-10 00:00 UT   12 57 43.5   -32 17 43     0.438    1.222  112.3   48.4   305   26.5 
2026-02-11 00:00 UT   12 58 27.3   -32 09 55     0.434    1.224  113.1   47.8   306   26.4 
2026-02-12 00:00 UT   12 59 07.7   -32 01 21     0.430    1.227  114.0   47.3   306   26.4 
2026-02-13 00:00 UT   12 59 44.6   -31 51 58     0.426    1.229  114.9   46.8   306   26.4 
2026-02-14 00:00 UT   13 00 17.9   -31 41 46     0.422    1.232  115.8   46.2   307   26.3 
2026-02-15 00:00 UT   13 00 47.5   -31 30 43     0.418    1.234  116.8   45.6   307   26.3 
2026-02-16 00:00 UT   13 01 13.4   -31 18 47     0.415    1.236  117.7   45.0   307   26.3 
2026-02-17 00:00 UT   13 01 35.6   -31 05 57     0.411    1.239  118.7   44.4   308   26.2 
2026-02-18 00:00 UT   13 01 53.9   -30 52 11     0.407    1.241  119.7   43.8   308   26.2 
2026-02-19 00:00 UT   13 02 08.4   -30 37 27     0.403    1.244  120.7   43.1   308   26.2 
2026-02-20 00:00 UT   13 02 19.0   -30 21 45     0.399    1.246  121.8   42.4   309   26.1 
2026-02-21 00:00 UT   13 02 25.6   -30 05 03     0.395    1.248  122.8   41.7   309   26.1 
2026-02-22 00:00 UT   13 02 28.4   -29 47 18     0.392    1.251  123.9   41.0   309   26.1 
2026-02-23 00:00 UT   13 02 27.2   -29 28 30     0.388    1.253  125.0   40.3   310   26.0 
2026-02-24 00:00 UT   13 02 22.1   -29 08 37     0.384    1.255  126.1   39.5   310   26.0 
2026-02-25 00:00 UT   13 02 13.0   -28 47 37     0.381    1.258  127.3   38.8   311   25.9 
2026-02-26 00:00 UT   13 01 60.0   -28 25 30     0.377    1.260  128.5   38.0   311   25.9 

    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.