(152664) 1998 FW4
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	5 Oct 2026	26.0	3.338 AU	4.157 AU	14h35m	-17°41'	30.8°	8.8°

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 1998 FW4 are:

            e (Eccentricity)                : 0.7139285
            a (Semimajor axis)              : 2.5198069
            i (Inclination)                 : 3.41334
            Ω (Longitude of ascending node) : 353.53295
            ω (Argument of perihelion)      : 85.60650
            M (Mean anomaly)                : 51.53817
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 79.13167
            B (Latitude of perihelion)      : 3.40330
            P (Orbital period in years)     : 4.00            
        

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
2026-10-05 00:00 UT   14 35 57.7   -17 41 18     4.157    3.338   30.8    8.8   112   26.0 
2026-10-05 06:49 UT   14 36 17.8   -17 42 50     4.160    3.339   30.7    8.8   112   26.0 
2026-10-06 00:00 UT   14 37 08.4   -17 46 43     4.169    3.343   30.2    8.6   112   26.0 
2026-10-07 00:00 UT   14 38 19.2   -17 52 06     4.182    3.348   29.5    8.4   112   26.0 
2026-10-08 00:00 UT   14 39 30.1   -17 57 29     4.194    3.353   28.8    8.3   112   26.0 
2026-10-09 00:00 UT   14 40 41.2   -18 02 50     4.207    3.358   28.1    8.1   112   26.0 
2026-10-10 00:00 UT   14 41 52.3   -18 08 11     4.219    3.364   27.4    7.9   112   26.0 
2026-10-11 00:00 UT   14 43 03.6   -18 13 31     4.230    3.369   26.7    7.7   112   26.0 
2026-10-12 00:00 UT   14 44 14.9   -18 18 50     4.242    3.374   26.0    7.5   112   26.0 
2026-10-13 00:00 UT   14 45 26.3   -18 24 07     4.254    3.379   25.3    7.3   112   26.0 
2026-10-14 00:00 UT   14 46 37.8   -18 29 24     4.265    3.384   24.6    7.1   112   26.0 
2026-10-15 00:00 UT   14 47 49.3   -18 34 39     4.276    3.389   24.0    6.9   112   26.0 
2026-10-16 00:00 UT   14 49 01.0   -18 39 53     4.287    3.394   23.3    6.7   113   26.0 
2026-10-17 00:00 UT   14 50 12.7   -18 45 07     4.298    3.399   22.6    6.5   113   26.0 
2026-10-18 00:00 UT   14 51 24.4   -18 50 18     4.308    3.404   21.9    6.3   113   26.0 
2026-10-19 00:00 UT   14 52 36.2   -18 55 29     4.319    3.409   21.2    6.1   113   26.0 
2026-10-20 00:00 UT   14 53 48.1   -19 00 38     4.329    3.414   20.5    5.9   113   26.0 
2026-10-21 00:00 UT   14 55 00.0   -19 05 46     4.339    3.419   19.8    5.7   113   26.0 
2026-10-22 00:00 UT   14 56 12.0   -19 10 53     4.349    3.424   19.1    5.5   113   26.0 
2026-10-23 00:00 UT   14 57 24.0   -19 15 58     4.358    3.429   18.4    5.3   114   26.0 
2026-10-24 00:00 UT   14 58 36.1   -19 21 02     4.368    3.434   17.7    5.1   114   26.0 
2026-10-25 00:00 UT   14 59 48.1   -19 26 05     4.377    3.439   17.0    4.9   114   26.0 
2026-10-26 00:00 UT   15 01 00.3   -19 31 06     4.386    3.443   16.3    4.7   114   26.0 
2026-10-27 00:00 UT   15 02 12.4   -19 36 06     4.395    3.448   15.6    4.5   114   26.0 
2026-10-28 00:00 UT   15 03 24.6   -19 41 04     4.404    3.453   14.9    4.3   115   26.0 
2026-10-29 00:00 UT   15 04 36.7   -19 46 01     4.412    3.458   14.3    4.1   115   26.0 
2026-10-30 00:00 UT   15 05 48.9   -19 50 56     4.420    3.463   13.6    3.9   116   26.0 
2026-10-31 00:00 UT   15 07 01.2   -19 55 50     4.428    3.468   12.9    3.7   116   26.0 
2026-11-01 00:00 UT   15 08 13.4   -20 00 42     4.436    3.472   12.2    3.5   117   26.0 
2026-11-02 00:00 UT   15 09 25.6   -20 05 33     4.444    3.477   11.5    3.3   117   26.0 

    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.