2023 JY3
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	30 Dec 2025	28.2	3.187 AU	2.253 AU	08h10m	+27°39'	158.1°	6.6°

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
2025-12-30 00:00 UT   08 10 32.6   +27 39 19     2.253    3.187  158.1    6.6   264   28.2 
2025-12-30 13:45 UT   08 09 57.5   +27 42 22     2.248    3.184  158.8    6.4   263   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 
2026-01-16 00:00 UT   07 50 44.7   +29 04 32     2.144    3.121  172.0    2.5   182   27.8 
2026-01-17 00:00 UT   07 49 28.2   +29 08 56     2.140    3.117  171.6    2.6   173   27.8 
2026-01-18 00:00 UT   07 48 11.4   +29 13 14     2.137    3.113  171.1    2.8   164   27.8 
2026-01-19 00:00 UT   07 46 54.4   +29 17 26     2.134    3.109  170.5    3.0   157   27.8 
2026-01-20 00:00 UT   07 45 37.2   +29 21 31     2.132    3.105  169.7    3.3   151   27.9 
2026-01-21 00:00 UT   07 44 19.9   +29 25 29     2.129    3.101  168.8    3.5   146   27.9 
2026-01-22 00:00 UT   07 43 02.6   +29 29 20     2.128    3.097  167.9    3.8   141   27.9 
2026-01-23 00:00 UT   07 41 45.4   +29 33 04     2.126    3.092  166.8    4.2   137   27.9 
2026-01-24 00:00 UT   07 40 28.4   +29 36 41     2.125    3.088  165.8    4.5   134   27.9 
2026-01-25 00:00 UT   07 39 11.6   +29 40 11     2.124    3.084  164.7    4.8   131   27.9 
2026-01-26 00:00 UT   07 37 55.1   +29 43 32     2.123    3.080  163.6    5.2   128   27.9 
2026-01-27 00:00 UT   07 36 38.9   +29 46 47     2.123    3.076  162.4    5.5   126   28.0 
2026-01-28 00:00 UT   07 35 23.3   +29 49 53     2.123    3.072  161.3    5.9   124   28.0 
2026-01-29 00:00 UT   07 34 08.1   +29 52 51     2.123    3.068  160.1    6.3   122   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.