(163348) 2002 NN4
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	3 Dec 2025	30.5	0.542 AU	0.452 AU	16h03m	-20°28'	7.9°	165.6°

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 2002 NN4 are:

            e (Eccentricity)                : 0.4345950
            a (Semimajor axis)              : 0.8757941
            i (Inclination)                 : 5.41965
            Ω (Longitude of ascending node) : 259.40840
            ω (Argument of perihelion)      : 222.20581
            M (Mean anomaly)                : 328.82425
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 301.48649
            B (Latitude of perihelion)      : -3.63791
            P (Orbital period in years)     : 0.82            
        

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
2025-12-03 00:00 UT   16 03 18.8   -20 28 43     0.452    0.542    7.9  165.6   283   30.5 
2025-12-03 22:40 UT   15 59 40.6   -20 37 05     0.462    0.536    9.6  162.1   281   28.8 
2025-12-04 00:00 UT   15 59 28.2   -20 37 34     0.462    0.536    9.7  161.9   281   28.7 
2025-12-05 00:00 UT   15 55 56.1   -20 46 05     0.473    0.530   11.5  158.2   280   27.4 
2025-12-06 00:00 UT   15 52 43.6   -20 54 22     0.485    0.525   13.3  154.5   279   26.5 
2025-12-07 00:00 UT   15 49 51.9   -21 02 29     0.498    0.520   14.9  150.8   279   25.7 
2025-12-08 00:00 UT   15 47 21.7   -21 10 30     0.512    0.515   16.5  147.1   278   25.1 
2025-12-09 00:00 UT   15 45 13.6   -21 18 29     0.526    0.511   18.0  143.5   278   24.5 
2025-12-10 00:00 UT   15 43 27.9   -21 26 29     0.541    0.507   19.4  139.9   278   24.1 
2025-12-11 00:00 UT   15 42 04.6   -21 34 33     0.556    0.504   20.7  136.4   278   23.7 
2025-12-12 00:00 UT   15 41 03.6   -21 42 45     0.572    0.501   21.9  132.9   278   23.3 
2025-12-13 00:00 UT   15 40 24.5   -21 51 04     0.589    0.499   23.1  129.4   278   23.0 
2025-12-14 00:00 UT   15 40 06.9   -21 59 34     0.606    0.497   24.1  126.0   278   22.8 
2025-12-15 00:00 UT   15 40 10.1   -22 08 13     0.623    0.496   25.1  122.7   278   22.6 
2025-12-16 00:00 UT   15 40 33.4   -22 17 02     0.641    0.495   26.0  119.4   278   22.4 
2025-12-17 00:00 UT   15 41 15.9   -22 26 01     0.659    0.495   26.8  116.2   278   22.2 
2025-12-18 00:00 UT   15 42 16.8   -22 35 07     0.678    0.495   27.6  113.1   278   22.0 
2025-12-19 00:00 UT   15 43 35.1   -22 44 20     0.697    0.496   28.3  110.0   277   21.9 
2025-12-20 00:00 UT   15 45 09.8   -22 53 39     0.715    0.498   28.9  107.0   277   21.8 
2025-12-21 00:00 UT   15 46 59.8   -23 02 60     0.734    0.499   29.5  104.1   277   21.7 
2025-12-22 00:00 UT   15 49 04.2   -23 12 21     0.753    0.502   30.0  101.3   277   21.6 
2025-12-23 00:00 UT   15 51 22.0   -23 21 41     0.772    0.505   30.5   98.6   277   21.6 
2025-12-24 00:00 UT   15 53 52.0   -23 30 57     0.792    0.508   30.9   95.9   277   21.5 
2025-12-25 00:00 UT   15 56 33.5   -23 40 07     0.811    0.512   31.3   93.4   277   21.5 
2025-12-26 00:00 UT   15 59 25.3   -23 49 08     0.829    0.516   31.6   90.9   276   21.4 
2025-12-27 00:00 UT   16 02 26.5   -23 57 58     0.848    0.521   31.9   88.5   276   21.4 
2025-12-28 00:00 UT   16 05 36.4   -24 06 35     0.867    0.526   32.2   86.2   276   21.4 
2025-12-29 00:00 UT   16 08 54.0   -24 14 57     0.885    0.531   32.5   84.0   276   21.4 
2025-12-30 00:00 UT   16 12 18.7   -24 23 02     0.904    0.537   32.7   81.9   275   21.3 
2025-12-31 00:00 UT   16 15 49.5   -24 30 48     0.922    0.543   32.9   79.8   275   21.3 
2026-01-01 00:00 UT   16 19 25.9   -24 38 14     0.939    0.549   33.1   77.9   275   21.3 
2026-01-02 00:00 UT   16 23 07.2   -24 45 19     0.957    0.556   33.3   76.0   275   21.3 

    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.