2010 PY4
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	14 Jun 2026	25.0	3.371 AU	3.579 AU	10h03m	+01°29'	70.1°	16.5°
Opposition	9 May 2027	22.3	2.518 AU	1.559 AU	14h30m	-39°33'	156.6°	9.2°

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 2010 PY4 are:

            e (Eccentricity)                : 0.3065209
            a (Semimajor axis)              : 2.7057960
            i (Inclination)                 : 14.62765
            Ω (Longitude of ascending node) : 304.48742
            ω (Argument of perihelion)      : 18.33592
            M (Mean anomaly)                : 181.83099
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 322.26701
            B (Latitude of perihelion)      : 4.55665
            P (Orbital period in years)     : 4.45            
        

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
2026-06-14 00:00 UT   10 03 24.2   +01 29 49     3.579    3.371   70.1   16.5   114   25.0 
2026-06-14 03:33 UT   10 03 31.2   +01 29 18     3.581    3.370   69.9   16.4   114   25.0 
2026-06-15 00:00 UT   10 04 11.8   +01 26 16     3.591    3.369   69.3   16.4   114   25.0 
2026-06-16 00:00 UT   10 04 59.9   +01 22 38     3.603    3.367   68.6   16.3   115   25.0 
2026-06-17 00:00 UT   10 05 48.6   +01 18 55     3.615    3.366   67.9   16.2   115   25.0 
2026-06-18 00:00 UT   10 06 37.9   +01 15 08     3.626    3.364   67.1   16.2   115   25.0 
2026-06-19 00:00 UT   10 07 27.8   +01 11 15     3.638    3.363   66.4   16.1   115   25.0 
2026-06-20 00:00 UT   10 08 18.2   +01 07 18     3.649    3.361   65.7   16.0   115   25.0 
2026-06-21 00:00 UT   10 09 09.1   +01 03 17     3.661    3.360   65.0   15.9   115   25.0 
2026-06-22 00:00 UT   10 10 00.6   +00 59 10     3.672    3.358   64.3   15.8   116   25.0 
2026-06-23 00:00 UT   10 10 52.6   +00 54 59     3.684    3.356   63.5   15.7   116   25.0 
2026-06-24 00:00 UT   10 11 45.1   +00 50 43     3.695    3.355   62.8   15.6   116   25.1 
2026-06-25 00:00 UT   10 12 38.2   +00 46 23     3.706    3.353   62.1   15.5   116   25.1 
2026-06-26 00:00 UT   10 13 31.7   +00 41 58     3.717    3.352   61.4   15.4   116   25.1 
2026-06-27 00:00 UT   10 14 25.7   +00 37 29     3.728    3.350   60.7   15.3   117   25.1 
2026-06-28 00:00 UT   10 15 20.2   +00 32 56     3.738    3.348   60.0   15.2   117   25.1 
2026-06-29 00:00 UT   10 16 15.1   +00 28 17     3.749    3.347   59.3   15.1   117   25.1 
2026-06-30 00:00 UT   10 17 10.6   +00 23 35     3.760    3.345   58.6   15.0   117   25.1 
2026-07-01 00:00 UT   10 18 06.5   +00 18 48     3.770    3.343   57.9   14.9   117   25.1 
2026-07-02 00:00 UT   10 19 02.8   +00 13 57     3.780    3.342   57.3   14.8   118   25.1 
2026-07-03 00:00 UT   10 19 59.6   +00 09 02     3.791    3.340   56.6   14.7   118   25.1 
2026-07-04 00:00 UT   10 20 56.8   +00 04 02     3.801    3.338   55.9   14.6   118   25.1 
2026-07-05 00:00 UT   10 21 54.4   +00 01 02     3.811    3.337   55.2   14.5   118   25.1 
2026-07-06 00:00 UT   10 22 52.5   +00 06 10     3.821    3.335   54.5   14.4   118   25.1 
2026-07-07 00:00 UT   10 23 51.0   +00 11 23     3.830    3.333   53.8   14.3   119   25.1 
2026-07-08 00:00 UT   10 24 49.9   +00 16 39     3.840    3.332   53.2   14.1   119   25.1 
2026-07-09 00:00 UT   10 25 49.2   +00 21 60     3.850    3.330   52.5   14.0   119   25.1 
2026-07-10 00:00 UT   10 26 48.9   +00 27 25     3.859    3.328   51.8   13.9   119   25.1 
2026-07-11 00:00 UT   10 27 49.0   +00 32 54     3.868    3.326   51.2   13.8   119   25.1 
2026-07-12 00:00 UT   10 28 49.5   +00 38 27     3.878    3.325   50.5   13.6   120   25.1 
2026-07-13 00:00 UT   10 29 50.4   +00 44 04     3.887    3.323   49.8   13.5   120   25.1 
2026-07-14 00:00 UT   10 30 51.6   +00 49 46     3.896    3.321   49.2   13.4   120   25.1 

    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.