2010 PY4
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	15 May 2026	24.8	3.414 AU	3.195 AU	09h45m	+02°36'	93.7°	17.2°
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
2026-05-15 00:00 UT   09 45 06.2   +02 36 50     3.195    3.414   93.7   17.2   109   24.8 
2026-05-15 02:28 UT   09 45 08.7   +02 36 44     3.197    3.413   93.6   17.2   109   24.8 
2026-05-16 00:00 UT   09 45 30.9   +02 35 53     3.209    3.412   92.9   17.2   109   24.8 
2026-05-17 00:00 UT   09 45 56.6   +02 34 51     3.222    3.411   92.0   17.2   109   24.8 
2026-05-18 00:00 UT   09 46 23.1   +02 33 43     3.235    3.410   91.2   17.3   109   24.9 
2026-05-19 00:00 UT   09 46 50.6   +02 32 30     3.248    3.408   90.4   17.3   110   24.9 
2026-05-20 00:00 UT   09 47 19.0   +02 31 11     3.261    3.407   89.5   17.3   110   24.9 
2026-05-21 00:00 UT   09 47 48.3   +02 29 47     3.274    3.405   88.7   17.3   110   24.9 
2026-05-22 00:00 UT   09 48 18.4   +02 28 17     3.288    3.404   87.9   17.3   110   24.9 
2026-05-23 00:00 UT   09 48 49.4   +02 26 42     3.301    3.403   87.1   17.3   110   24.9 
2026-05-24 00:00 UT   09 49 21.3   +02 25 01     3.314    3.401   86.3   17.3   111   24.9 
2026-05-25 00:00 UT   09 49 54.0   +02 23 15     3.327    3.400   85.5   17.3   111   24.9 
2026-05-26 00:00 UT   09 50 27.5   +02 21 24     3.340    3.399   84.6   17.3   111   24.9 
2026-05-27 00:00 UT   09 51 01.8   +02 19 27     3.353    3.397   83.8   17.2   111   24.9 
2026-05-28 00:00 UT   09 51 36.9   +02 17 26     3.366    3.396   83.1   17.2   111   24.9 
2026-05-29 00:00 UT   09 52 12.8   +02 15 18     3.379    3.394   82.3   17.2   111   24.9 
2026-05-30 00:00 UT   09 52 49.4   +02 13 06     3.392    3.393   81.5   17.2   112   24.9 
2026-05-31 00:00 UT   09 53 26.9   +02 10 49     3.405    3.391   80.7   17.2   112   24.9 
2026-06-01 00:00 UT   09 54 05.0   +02 08 26     3.417    3.390   79.9   17.1   112   25.0 
2026-06-02 00:00 UT   09 54 43.9   +02 05 58     3.430    3.389   79.1   17.1   112   25.0 
2026-06-03 00:00 UT   09 55 23.5   +02 03 25     3.443    3.387   78.4   17.1   112   25.0 
2026-06-04 00:00 UT   09 56 03.9   +02 00 47     3.456    3.386   77.6   17.0   112   25.0 
2026-06-05 00:00 UT   09 56 44.9   +01 58 04     3.468    3.384   76.8   17.0   113   25.0 
2026-06-06 00:00 UT   09 57 26.6   +01 55 15     3.481    3.383   76.1   16.9   113   25.0 
2026-06-07 00:00 UT   09 58 09.0   +01 52 22     3.493    3.381   75.3   16.9   113   25.0 
2026-06-08 00:00 UT   09 58 52.1   +01 49 24     3.506    3.380   74.5   16.8   113   25.0 
2026-06-09 00:00 UT   09 59 35.9   +01 46 20     3.518    3.378   73.8   16.8   113   25.0 
2026-06-10 00:00 UT   10 00 20.3   +01 43 12     3.530    3.377   73.0   16.7   114   25.0 
2026-06-11 00:00 UT   10 01 05.3   +01 39 59     3.543    3.375   72.3   16.7   114   25.0 
2026-06-12 00:00 UT   10 01 51.0   +01 36 40     3.555    3.374   71.5   16.6   114   25.0 
2026-06-13 00:00 UT   10 02 37.3   +01 33 17     3.567    3.372   70.8   16.5   114   25.0 
2026-06-14 00:00 UT   10 03 24.2   +01 29 49     3.579    3.371   70.1   16.5   114   25.0 

    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.