2020 BW5
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	1 Nov 2025	27.6	1.671 AU	0.713 AU	03h59m	+21°28'	156.4°	13.8°

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 2020 BW5 are:

            e (Eccentricity)                : 0.3444179
            a (Semimajor axis)              : 1.3295953
            i (Inclination)                 : 0.51331
            Ω (Longitude of ascending node) : 276.92466
            ω (Argument of perihelion)      : 281.49230
            M (Mean anomaly)                : 247.87347
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 198.41741
            B (Latitude of perihelion)      : -0.50302
            P (Orbital period in years)     : 1.53            
        

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
2025-11-01 00:00 UT   03 59 13.8   +21 28 00     0.713    1.671  156.4   13.8   256   27.6 
2025-11-01 23:04 UT   03 57 44.2   +21 23 50     0.707    1.668  157.7   13.1   256   27.5 
2025-11-02 00:00 UT   03 57 40.6   +21 23 39     0.707    1.668  157.7   13.0   256   27.5 
2025-11-03 00:00 UT   03 56 03.9   +21 19 03     0.700    1.665  159.1   12.3   256   27.5 
2025-11-04 00:00 UT   03 54 23.9   +21 14 13     0.694    1.662  160.5   11.5   255   27.4 
2025-11-05 00:00 UT   03 52 40.6   +21 09 08     0.688    1.660  161.9   10.7   255   27.4 
2025-11-06 00:00 UT   03 50 54.1   +21 03 48     0.682    1.657  163.3    9.9   255   27.3 
2025-11-07 00:00 UT   03 49 04.6   +20 58 12     0.677    1.654  164.8    9.1   254   27.3 
2025-11-08 00:00 UT   03 47 12.2   +20 52 22     0.672    1.651  166.2    8.2   254   27.2 
2025-11-09 00:00 UT   03 45 16.9   +20 46 16     0.666    1.648  167.7    7.4   253   27.1 
2025-11-10 00:00 UT   03 43 19.0   +20 39 55     0.662    1.645  169.2    6.5   252   27.1 
2025-11-11 00:00 UT   03 41 18.6   +20 33 19     0.657    1.642  170.6    5.6   251   27.0 
2025-11-12 00:00 UT   03 39 15.8   +20 26 29     0.653    1.639  172.1    4.7   250   27.0 
2025-11-13 00:00 UT   03 37 10.9   +20 19 23     0.648    1.636  173.6    3.9   248   26.9 
2025-11-14 00:00 UT   03 35 04.0   +20 12 04     0.645    1.633  175.1    3.0   246   26.8 
2025-11-15 00:00 UT   03 32 55.4   +20 04 31     0.641    1.629  176.6    2.1   241   26.7 
2025-11-16 00:00 UT   03 30 45.2   +19 56 44     0.637    1.626  178.0    1.2   229   26.7 
2025-11-17 00:00 UT   03 28 33.8   +19 48 45     0.634    1.623  179.1    0.6   178   26.6 
2025-11-18 00:00 UT   03 26 21.2   +19 40 34     0.631    1.620  178.4    1.0   109   26.6 
2025-11-19 00:00 UT   03 24 07.9   +19 32 12     0.629    1.616  177.0    1.9    92   26.7 

    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.