2021 QF5
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	4 Sep 2026	30.2	3.442 AU	4.231 AU	12h54m	-06°41'	34.0°	9.4°

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 2021 QF5 are:

            e (Eccentricity)                : 0.5459660
            a (Semimajor axis)              : 2.2471966
            i (Inclination)                 : 1.21882
            Ω (Longitude of ascending node) : 256.67351
            ω (Argument of perihelion)      : 135.04072
            M (Mean anomaly)                : 134.32173
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 211.72071
            B (Latitude of perihelion)      : 0.86119
            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
2026-09-04 00:00 UT   12 54 34.6   -06 41 16     4.231    3.442   34.0    9.4   114   30.2 
2026-09-04 00:36 UT   12 54 36.2   -06 41 26     4.232    3.442   34.0    9.4   114   30.2 
2026-09-05 00:00 UT   12 55 37.2   -06 47 36     4.240    3.443   33.3    9.3   114   30.2 
2026-09-06 00:00 UT   12 56 39.9   -06 53 57     4.249    3.444   32.7    9.1   114   30.2 
2026-09-07 00:00 UT   12 57 43.0   -07 00 20     4.258    3.445   32.0    8.9   114   30.2 
2026-09-08 00:00 UT   12 58 46.2   -07 06 43     4.267    3.446   31.3    8.7   114   30.2 
2026-09-09 00:00 UT   12 59 49.6   -07 13 06     4.275    3.447   30.6    8.6   114   30.1 
2026-09-10 00:00 UT   13 00 53.3   -07 19 31     4.284    3.447   29.9    8.4   114   30.1 
2026-09-11 00:00 UT   13 01 57.2   -07 25 56     4.292    3.448   29.2    8.2   114   30.1 
2026-09-12 00:00 UT   13 03 01.3   -07 32 23     4.300    3.449   28.5    8.0   114   30.1 
2026-09-13 00:00 UT   13 04 05.5   -07 38 49     4.308    3.450   27.8    7.8   114   30.1 
2026-09-14 00:00 UT   13 05 10.0   -07 45 17     4.315    3.451   27.2    7.6   114   30.1 
2026-09-15 00:00 UT   13 06 14.7   -07 51 45     4.323    3.451   26.5    7.5   114   30.1 
2026-09-16 00:00 UT   13 07 19.5   -07 58 13     4.330    3.452   25.8    7.3   114   30.1 
2026-09-17 00:00 UT   13 08 24.5   -08 04 42     4.337    3.453   25.1    7.1   114   30.1 
2026-09-18 00:00 UT   13 09 29.7   -08 11 11     4.344    3.454   24.4    6.9   114   30.1 
2026-09-19 00:00 UT   13 10 35.1   -08 17 41     4.351    3.454   23.7    6.7   114   30.1 
2026-09-20 00:00 UT   13 11 40.7   -08 24 11     4.357    3.455   23.0    6.5   114   30.1 
2026-09-21 00:00 UT   13 12 46.4   -08 30 41     4.363    3.456   22.4    6.3   114   30.1 
2026-09-22 00:00 UT   13 13 52.3   -08 37 12     4.370    3.457   21.7    6.2   114   30.1 
2026-09-23 00:00 UT   13 14 58.3   -08 43 43     4.376    3.457   21.0    6.0   114   30.1 
2026-09-24 00:00 UT   13 16 04.5   -08 50 13     4.381    3.458   20.3    5.8   114   30.1 
2026-09-25 00:00 UT   13 17 10.8   -08 56 45     4.387    3.459   19.6    5.6   114   30.1 
2026-09-26 00:00 UT   13 18 17.3   -09 03 16     4.392    3.459   18.9    5.4   114   30.1 
2026-09-27 00:00 UT   13 19 23.9   -09 09 47     4.398    3.460   18.2    5.2   114   30.1 
2026-09-28 00:00 UT   13 20 30.7   -09 16 18     4.403    3.460   17.6    5.0   114   30.1 
2026-09-29 00:00 UT   13 21 37.6   -09 22 50     4.408    3.461   16.9    4.8   114   30.0 
2026-09-30 00:00 UT   13 22 44.7   -09 29 21     4.412    3.462   16.2    4.6   114   30.0 
2026-10-01 00:00 UT   13 23 51.9   -09 35 52     4.417    3.462   15.5    4.4   114   30.0 
2026-10-02 00:00 UT   13 24 59.2   -09 42 24     4.421    3.463   14.8    4.2   114   30.0 
2026-10-03 00:00 UT   13 26 06.6   -09 48 55     4.425    3.463   14.1    4.0   115   30.0 

    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.