(285571) 2000 PQ9
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	31 Dec 2025	23.3	2.450 AU	2.072 AU	11h38m	-08°31'	100.5°	23.2°

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 2000 PQ9 are:

            e (Eccentricity)                : 0.4324411
            a (Semimajor axis)              : 1.9035657
            i (Inclination)                 : 13.48267
            Ω (Longitude of ascending node) : 297.16245
            ω (Argument of perihelion)      : 7.05697
            M (Mean anomaly)                : 231.96153
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 304.02681
            B (Latitude of perihelion)      : 1.64141
            P (Orbital period in years)     : 2.63            
        

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
2025-12-31 00:00 UT   11 38 48.8   -08 31 03     2.072    2.450  100.5   23.2   296   23.3 
2025-12-31 05:57 UT   11 38 55.1   -08 33 33     2.068    2.449  100.7   23.2   296   23.3 
2026-01-01 00:00 UT   11 39 13.9   -08 41 06     2.056    2.447  101.3   23.2   296   23.3 
2026-01-02 00:00 UT   11 39 37.8   -08 51 06     2.039    2.443  102.2   23.2   296   23.2 
2026-01-03 00:00 UT   11 40 00.3   -09 01 03     2.023    2.440  103.0   23.1   296   23.2 
2026-01-04 00:00 UT   11 40 21.4   -09 10 58     2.007    2.437  103.8   23.1   296   23.2 
2026-01-05 00:00 UT   11 40 41.3   -09 20 49     1.991    2.434  104.7   23.0   297   23.2 
2026-01-06 00:00 UT   11 40 59.7   -09 30 37     1.975    2.431  105.6   22.9   297   23.1 
2026-01-07 00:00 UT   11 41 16.7   -09 40 21     1.959    2.427  106.4   22.9   297   23.1 
2026-01-08 00:00 UT   11 41 32.2   -09 50 02     1.943    2.424  107.3   22.8   297   23.1 
2026-01-09 00:00 UT   11 41 46.3   -09 59 40     1.927    2.421  108.2   22.7   297   23.1 
2026-01-10 00:00 UT   11 41 58.8   -10 09 13     1.911    2.417  109.0   22.6   298   23.1 
2026-01-11 00:00 UT   11 42 09.8   -10 18 43     1.895    2.414  109.9   22.5   298   23.0 
2026-01-12 00:00 UT   11 42 19.2   -10 28 08     1.879    2.411  110.8   22.4   298   23.0 
2026-01-13 00:00 UT   11 42 27.1   -10 37 28     1.863    2.407  111.7   22.3   299   23.0 
2026-01-14 00:00 UT   11 42 33.3   -10 46 44     1.848    2.404  112.6   22.2   299   23.0 
2026-01-15 00:00 UT   11 42 37.8   -10 55 56     1.832    2.401  113.5   22.1   299   22.9 
2026-01-16 00:00 UT   11 42 40.7   -11 05 02     1.817    2.397  114.4   21.9   299   22.9 
2026-01-17 00:00 UT   11 42 41.8   -11 14 02     1.802    2.394  115.3   21.8   300   22.9 
2026-01-18 00:00 UT   11 42 41.2   -11 22 57     1.786    2.390  116.3   21.7   300   22.9 
2026-01-19 00:00 UT   11 42 38.8   -11 31 47     1.771    2.387  117.2   21.5   300   22.8 
2026-01-20 00:00 UT   11 42 34.7   -11 40 30     1.756    2.383  118.1   21.4   301   22.8 
2026-01-21 00:00 UT   11 42 28.7   -11 49 07     1.741    2.380  119.0   21.2   301   22.8 
2026-01-22 00:00 UT   11 42 20.8   -11 57 38     1.726    2.376  120.0   21.0   301   22.7 
2026-01-23 00:00 UT   11 42 11.1   -12 06 02     1.712    2.373  120.9   20.8   302   22.7 
2026-01-24 00:00 UT   11 41 59.5   -12 14 18     1.697    2.369  121.9   20.7   302   22.7 
2026-01-25 00:00 UT   11 41 46.0   -12 22 28     1.683    2.366  122.8   20.5   303   22.7 
2026-01-26 00:00 UT   11 41 30.5   -12 30 30     1.668    2.362  123.8   20.3   303   22.6 
2026-01-27 00:00 UT   11 41 13.1   -12 38 25     1.654    2.358  124.7   20.1   304   22.6 
2026-01-28 00:00 UT   11 40 53.8   -12 46 11     1.640    2.355  125.7   19.8   304   22.6 
2026-01-29 00:00 UT   11 40 32.4   -12 53 49     1.626    2.351  126.7   19.6   305   22.5 
2026-01-30 00:00 UT   11 40 09.0   -13 01 18     1.612    2.347  127.7   19.4   305   22.5 

    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.