2018 BJ1
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 May 2026	28.1	2.332 AU	1.334 AU	15h56m	-22°30'	168.1°	5.1°

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
2026-05-11 00:00 UT   15 56 29.1   -22 30 34     1.334    2.332  168.1    5.1   292   28.1 
2026-05-11 13:07 UT   15 55 38.0   -22 28 09     1.330    2.329  168.8    4.8   292   28.1 
2026-05-12 00:00 UT   15 54 55.2   -22 26 06     1.327    2.327  169.4    4.6   293   28.0 
2026-05-13 00:00 UT   15 53 19.9   -22 21 28     1.319    2.322  170.7    4.0   295   28.0 
2026-05-14 00:00 UT   15 51 43.2   -22 16 40     1.312    2.317  172.0    3.5   297   27.9 
2026-05-15 00:00 UT   15 50 05.2   -22 11 44     1.306    2.312  173.3    2.9   300   27.9 
2026-05-16 00:00 UT   15 48 25.9   -22 06 38     1.299    2.308  174.6    2.4   305   27.8 
2026-05-17 00:00 UT   15 46 45.7   -22 01 22     1.293    2.303  175.8    1.8   312   27.8 
2026-05-18 00:00 UT   15 45 04.4   -21 55 59     1.287    2.298  177.0    1.3   325   27.7 
2026-05-19 00:00 UT   15 43 22.3   -21 50 26     1.282    2.293  177.8    1.0   350   27.7 
2026-05-20 00:00 UT   15 41 39.4   -21 44 45     1.276    2.288  177.9    0.9    26   27.7 
2026-05-21 00:00 UT   15 39 55.9   -21 38 56     1.271    2.283  177.2    1.2    55   27.7 
2026-05-22 00:00 UT   15 38 11.9   -21 32 59     1.267    2.278  176.2    1.7    71   27.7 
2026-05-23 00:00 UT   15 36 27.5   -21 26 55     1.262    2.272  174.9    2.2    80   27.7 
2026-05-24 00:00 UT   15 34 42.8   -21 20 43     1.258    2.267  173.7    2.8    85   27.8 
2026-05-25 00:00 UT   15 32 58.0   -21 14 25     1.254    2.262  172.3    3.4    88   27.8 
2026-05-26 00:00 UT   15 31 13.2   -21 08 00     1.251    2.257  171.0    4.0    91   27.8 
2026-05-27 00:00 UT   15 29 28.5   -21 01 30     1.248    2.252  169.7    4.6    93   27.8 
2026-05-28 00:00 UT   15 27 43.9   -20 54 54     1.245    2.246  168.3    5.2    94   27.9 
2026-05-29 00:00 UT   15 25 59.7   -20 48 13     1.242    2.241  166.9    5.9    96   27.9 
2026-05-30 00:00 UT   15 24 16.0   -20 41 27     1.240    2.236  165.6    6.5    97   27.9 
2026-05-31 00:00 UT   15 22 32.8   -20 34 38     1.238    2.231  164.2    7.1    98   27.9 

    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.