2023 JY3
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	16 Dec 2025	28.6	3.237 AU	2.407 AU	08h22m	+26°26'	141.7°	10.9°

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 2023 JY3 are:

            e (Eccentricity)                : 0.5854805
            a (Semimajor axis)              : 2.3257818
            i (Inclination)                 : 7.70608
            Ω (Longitude of ascending node) : 69.88740
            ω (Argument of perihelion)      : 195.61318
            M (Mean anomaly)                : 245.95102
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 85.36637
            B (Latitude of perihelion)      : -2.06823
            P (Orbital period in years)     : 3.55            
        

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
2025-12-16 00:00 UT   08 22 18.5   +26 26 49     2.407    3.237  141.7   10.9   275   28.6 
2025-12-16 11:47 UT   08 21 59.0   +26 29 14     2.400    3.236  142.3   10.7   274   28.6 
2025-12-17 00:00 UT   08 21 38.3   +26 31 44     2.394    3.234  142.9   10.6   274   28.5 
2025-12-18 00:00 UT   08 20 56.5   +26 36 42     2.382    3.230  144.1   10.3   274   28.5 
2025-12-19 00:00 UT   08 20 13.1   +26 41 43     2.369    3.227  145.2   10.0   273   28.5 
2025-12-20 00:00 UT   08 19 28.0   +26 46 48     2.357    3.223  146.4    9.7   273   28.5 
2025-12-21 00:00 UT   08 18 41.3   +26 51 55     2.346    3.220  147.6    9.4   272   28.4 
2025-12-22 00:00 UT   08 17 53.1   +26 57 05     2.334    3.216  148.7    9.1   271   28.4 
2025-12-23 00:00 UT   08 17 03.2   +27 02 17     2.323    3.212  149.9    8.8   271   28.4 
2025-12-24 00:00 UT   08 16 11.8   +27 07 31     2.312    3.209  151.1    8.5   270   28.4 
2025-12-25 00:00 UT   08 15 18.9   +27 12 47     2.302    3.205  152.3    8.2   269   28.3 
2025-12-26 00:00 UT   08 14 24.5   +27 18 04     2.291    3.201  153.4    7.9   268   28.3 
2025-12-27 00:00 UT   08 13 28.7   +27 23 22     2.281    3.198  154.6    7.6   267   28.3 
2025-12-28 00:00 UT   08 12 31.4   +27 28 41     2.272    3.194  155.8    7.3   266   28.3 
2025-12-29 00:00 UT   08 11 32.6   +27 33 60     2.262    3.190  157.0    6.9   265   28.2 
2025-12-30 00:00 UT   08 10 32.6   +27 39 19     2.253    3.187  158.1    6.6   264   28.2 
2025-12-31 00:00 UT   08 09 31.2   +27 44 38     2.244    3.183  159.3    6.3   262   28.2 
2026-01-01 00:00 UT   08 08 28.4   +27 49 56     2.235    3.179  160.5    5.9   261   28.2 
2026-01-02 00:00 UT   08 07 24.5   +27 55 13     2.227    3.175  161.6    5.6   259   28.1 
2026-01-03 00:00 UT   08 06 19.3   +28 00 30     2.219    3.171  162.7    5.3   257   28.1 
2026-01-04 00:00 UT   08 05 13.0   +28 05 44     2.211    3.168  163.9    5.0   255   28.1 
2026-01-05 00:00 UT   08 04 05.5   +28 10 57     2.204    3.164  165.0    4.6   252   28.0 
2026-01-06 00:00 UT   08 02 57.0   +28 16 07     2.197    3.160  166.0    4.3   249   28.0 
2026-01-07 00:00 UT   08 01 47.4   +28 21 15     2.190    3.156  167.1    4.0   246   28.0 
2026-01-08 00:00 UT   08 00 36.9   +28 26 19     2.184    3.152  168.1    3.7   242   28.0 
2026-01-09 00:00 UT   07 59 25.4   +28 31 21     2.178    3.148  169.0    3.4   237   27.9 
2026-01-10 00:00 UT   07 58 13.1   +28 36 19     2.172    3.145  169.8    3.2   232   27.9 
2026-01-11 00:00 UT   07 56 60.0   +28 41 13     2.166    3.141  170.6    2.9   225   27.9 
2026-01-12 00:00 UT   07 55 46.1   +28 46 02     2.161    3.137  171.2    2.7   218   27.9 
2026-01-13 00:00 UT   07 54 31.6   +28 50 48     2.156    3.133  171.7    2.6   210   27.9 
2026-01-14 00:00 UT   07 53 16.5   +28 55 28     2.152    3.129  172.0    2.5   201   27.8 
2026-01-15 00:00 UT   07 52 00.8   +29 00 03     2.148    3.125  172.1    2.5   191   27.8 

    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.