2021 QF5
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	21 Oct 2025	28.9	2.412 AU	3.181 AU	11h37m	+01°28'	33.3°	13.1°

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 2021 QF5 are:

            e (Eccentricity)                : 0.5459897
            a (Semimajor axis)              : 2.2474119
            i (Inclination)                 : 1.21881
            Ω (Longitude of ascending node) : 256.67743
            ω (Argument of perihelion)      : 135.04830
            M (Mean anomaly)                : 75.78266
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 211.73221
            B (Latitude of perihelion)      : 0.86107
            P (Orbital period in years)     : 3.37            
        

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
2025-10-21 00:00 UT   11 37 06.4   +01 28 29     3.181    2.412   33.3   13.1   292   28.9 
2025-10-21 11:15 UT   11 37 46.6   +01 24 04     3.180    2.415   33.6   13.2   292   28.9 
2025-10-22 00:00 UT   11 38 32.0   +01 19 03     3.179    2.418   33.9   13.3   292   28.9 
2025-10-23 00:00 UT   11 39 57.1   +01 09 40     3.176    2.424   34.6   13.5   292   28.9 
2025-10-24 00:00 UT   11 41 21.7   +01 00 20     3.174    2.429   35.2   13.6   292   28.9 
2025-10-25 00:00 UT   11 42 45.7   +00 51 03     3.171    2.435   35.8   13.8   292   29.0 
2025-10-26 00:00 UT   11 44 09.3   +00 41 48     3.169    2.441   36.4   14.0   292   29.0 
2025-10-27 00:00 UT   11 45 32.3   +00 32 37     3.166    2.447   37.0   14.2   292   29.0 
2025-10-28 00:00 UT   11 46 54.7   +00 23 29     3.163    2.452   37.6   14.3   292   29.0 
2025-10-29 00:00 UT   11 48 16.7   +00 14 24     3.160    2.458   38.3   14.5   292   29.0 
2025-10-30 00:00 UT   11 49 38.1   +00 05 22     3.156    2.463   38.9   14.7   292   29.0 
2025-10-31 00:00 UT   11 50 58.9   +00 03 37     3.153    2.469   39.5   14.8   292   29.0 
2025-11-01 00:00 UT   11 52 19.2   +00 12 33     3.149    2.475   40.2   15.0   292   29.0 
2025-11-02 00:00 UT   11 53 39.0   +00 21 25     3.145    2.480   40.8   15.2   292   29.0 
2025-11-03 00:00 UT   11 54 58.2   +00 30 14     3.141    2.486   41.4   15.3   292   29.0 
2025-11-04 00:00 UT   11 56 16.9   +00 38 59     3.137    2.491   42.1   15.5   292   29.0 
2025-11-05 00:00 UT   11 57 35.0   +00 47 41     3.133    2.497   42.7   15.6   292   29.0 
2025-11-06 00:00 UT   11 58 52.6   +00 56 20     3.129    2.502   43.4   15.8   292   29.0 
2025-11-07 00:00 UT   12 00 09.6   -01 04 55     3.124    2.508   44.0   15.9   292   29.1 
2025-11-08 00:00 UT   12 01 26.1   -01 13 27     3.120    2.513   44.7   16.1   292   29.1 
2025-11-09 00:00 UT   12 02 42.0   -01 21 55     3.115    2.519   45.3   16.2   292   29.1 
2025-11-10 00:00 UT   12 03 57.3   -01 30 20     3.110    2.524   46.0   16.4   292   29.1 
2025-11-11 00:00 UT   12 05 12.0   -01 38 41     3.105    2.530   46.6   16.5   292   29.1 
2025-11-12 00:00 UT   12 06 26.2   -01 46 58     3.099    2.535   47.3   16.7   293   29.1 
2025-11-13 00:00 UT   12 07 39.8   -01 55 11     3.094    2.541   48.0   16.8   293   29.1 

    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.