2021 GQ
ephemeris date magn radius delta ra dec elong phase
Today23 Oct 202527.61.978 AU0.988 AU02h09m+17°15'172.3°3.9°
2021 GQ - 2025-10-23
astro.vanbuitenen.nl


 
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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 GQ are:

            e (Eccentricity)                : 0.3329294
            a (Semimajor axis)              : 1.4856025
            i (Inclination)                 : 5.69904
            Ω (Longitude of ascending node) : 12.82568
            ω (Argument of perihelion)      : 203.47484
            M (Mean anomaly)                : 189.36297
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 36.19696
            B (Latitude of perihelion)      : -2.26704
            P (Orbital period in years)     : 1.81            
        

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
2025-10-23 00:00 UT   02 09 53.2   +17 15 30     0.988    1.978  172.3    3.9   220   27.6 
2025-10-23 06:47 UT   02 09 23.5   +17 14 01     0.988    1.979  172.6    3.7   218   27.6 
2025-10-24 00:00 UT   02 08 08.0   +17 10 10     0.987    1.979  173.4    3.3   213   27.6 
2025-10-25 00:00 UT   02 06 22.6   +17 04 41     0.987    1.979  174.5    2.8   204   27.6 
2025-10-26 00:00 UT   02 04 37.2   +16 59 04     0.987    1.979  175.3    2.4   190   27.5 
2025-10-27 00:00 UT   02 02 51.7   +16 53 19     0.987    1.979  175.8    2.1   173   27.5 
2025-10-28 00:00 UT   02 01 06.5   +16 47 27     0.987    1.980  175.8    2.1   154   27.5 
2025-10-29 00:00 UT   01 59 21.7   +16 41 29     0.988    1.980  175.4    2.3   136   27.5 
2025-10-30 00:00 UT   01 57 37.4   +16 35 25     0.989    1.980  174.6    2.7   122   27.6 
2025-10-31 00:00 UT   01 55 53.8   +16 29 16     0.990    1.980  173.6    3.2   112   27.6 
2025-11-01 00:00 UT   01 54 11.0   +16 23 03     0.992    1.980  172.4    3.8   105   27.6 
2025-11-02 00:00 UT   01 52 29.2   +16 16 46     0.994    1.980  171.2    4.4   100   27.7 
2025-11-03 00:00 UT   01 50 48.4   +16 10 26     0.996    1.980  170.0    5.0    96   27.7 
2025-11-04 00:00 UT   01 49 08.9   +16 04 05     0.998    1.980  168.7    5.7    92   27.7 
2025-11-05 00:00 UT   01 47 30.7   +15 57 42     1.001    1.980  167.3    6.3    90   27.8 
2025-11-06 00:00 UT   01 45 54.0   +15 51 18     1.004    1.980  166.0    6.9    88   27.8 
2025-11-07 00:00 UT   01 44 18.9   +15 44 55     1.007    1.980  164.7    7.6    86   27.9 
2025-11-08 00:00 UT   01 42 45.4   +15 38 32     1.010    1.980  163.3    8.2    85   27.9 
2025-11-09 00:00 UT   01 41 13.8   +15 32 11     1.014    1.980  162.0    8.9    84   27.9 
2025-11-10 00:00 UT   01 39 44.0   +15 25 52     1.018    1.980  160.7    9.5    82   28.0 
2025-11-11 00:00 UT   01 38 16.2   +15 19 36     1.022    1.980  159.3   10.2    81   28.0 
2025-11-12 00:00 UT   01 36 50.6   +15 13 24     1.027    1.979  158.0   10.8    81   28.0 


    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.