2018 BJ1
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 Apr 2026	29.2	2.462 AU	1.678 AU	16h27m	-23°37'	131.8°	17.7°

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 2018 BJ1 are:

            e (Eccentricity)                : 0.6038687
            a (Semimajor axis)              : 1.7271402
            i (Inclination)                 : 1.59454
            Ω (Longitude of ascending node) : 284.07017
            ω (Argument of perihelion)      : 103.79811
            M (Mean anomaly)                : 188.50790
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 207.87342
            B (Latitude of perihelion)      : 1.54851
            P (Orbital period in years)     : 2.27            
        

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
2026-04-11 00:00 UT   16 27 28.5   -23 37 33     1.678    2.462  131.8   17.7   281   29.2 
2026-04-11 13:18 UT   16 27 12.9   -23 37 17     1.670    2.460  132.4   17.5   281   29.2 
2026-04-12 00:00 UT   16 26 59.8   -23 37 03     1.664    2.458  132.9   17.4   281   29.2 
2026-04-13 00:00 UT   16 26 28.8   -23 36 27     1.649    2.454  134.0   17.1   281   29.1 
2026-04-14 00:00 UT   16 25 55.5   -23 35 46     1.635    2.450  135.1   16.8   281   29.1 
2026-04-15 00:00 UT   16 25 19.9   -23 34 59     1.621    2.446  136.2   16.5   281   29.1 
2026-04-16 00:00 UT   16 24 41.9   -23 34 05     1.608    2.442  137.4   16.2   281   29.0 
2026-04-17 00:00 UT   16 24 01.5   -23 33 06     1.594    2.438  138.5   15.8   281   29.0 
2026-04-18 00:00 UT   16 23 18.8   -23 31 59     1.581    2.434  139.6   15.5   282   29.0 
2026-04-19 00:00 UT   16 22 33.7   -23 30 47     1.567    2.430  140.8   15.1   282   28.9 
2026-04-20 00:00 UT   16 21 46.2   -23 29 27     1.554    2.426  141.9   14.8   282   28.9 
2026-04-21 00:00 UT   16 20 56.3   -23 28 01     1.542    2.422  143.1   14.4   282   28.9 
2026-04-22 00:00 UT   16 20 04.0   -23 26 27     1.529    2.417  144.3   14.0   282   28.8 
2026-04-23 00:00 UT   16 19 09.4   -23 24 46     1.517    2.413  145.5   13.7   283   28.8 
2026-04-24 00:00 UT   16 18 12.5   -23 22 58     1.504    2.409  146.7   13.3   283   28.8 
2026-04-25 00:00 UT   16 17 13.2   -23 21 02     1.492    2.404  147.9   12.9   283   28.7 
2026-04-26 00:00 UT   16 16 11.5   -23 18 58     1.481    2.400  149.1   12.4   283   28.7 
2026-04-27 00:00 UT   16 15 07.6   -23 16 46     1.469    2.396  150.3   12.0   284   28.7 
2026-04-28 00:00 UT   16 14 01.4   -23 14 26     1.458    2.391  151.5   11.6   284   28.6 
2026-04-29 00:00 UT   16 12 52.9   -23 11 58     1.447    2.387  152.7   11.1   284   28.6 
2026-04-30 00:00 UT   16 11 42.2   -23 09 21     1.436    2.383  154.0   10.7   285   28.5 
2026-05-01 00:00 UT   16 10 29.3   -23 06 35     1.426    2.378  155.2   10.2   285   28.5 
2026-05-02 00:00 UT   16 09 14.2   -23 03 41     1.415    2.374  156.5    9.7   285   28.5 
2026-05-03 00:00 UT   16 07 57.1   -23 00 38     1.405    2.369  157.8    9.3   286   28.4 
2026-05-04 00:00 UT   16 06 37.8   -22 57 25     1.395    2.364  159.0    8.8   286   28.4 
2026-05-05 00:00 UT   16 05 16.5   -22 54 03     1.386    2.360  160.3    8.3   287   28.3 
2026-05-06 00:00 UT   16 03 53.2   -22 50 32     1.377    2.355  161.6    7.8   287   28.3 
2026-05-07 00:00 UT   16 02 27.9   -22 46 52     1.368    2.351  162.9    7.3   288   28.3 
2026-05-08 00:00 UT   16 01 00.9   -22 43 02     1.359    2.346  164.2    6.7   289   28.2 
2026-05-09 00:00 UT   15 59 32.0   -22 39 02     1.350    2.341  165.5    6.2   289   28.2 
2026-05-10 00:00 UT   15 58 01.3   -22 34 53     1.342    2.337  166.8    5.7   290   28.1 
2026-05-11 00:00 UT   15 56 29.1   -22 30 34     1.334    2.332  168.1    5.1   292   28.1 

    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.