2018 HA1
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	9 Sep 2026	26.1	1.678 AU	2.242 AU	08h18m	-07°17'	44.4°	24.8°

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 2018 HA1 are:

            e (Eccentricity)                : 0.4187328
            a (Semimajor axis)              : 1.3276929
            i (Inclination)                 : 37.69593
            Ω (Longitude of ascending node) : 210.94176
            ω (Argument of perihelion)      : 108.79469
            M (Mean anomaly)                : 51.09879
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 144.21433
            B (Latitude of perihelion)      : 35.37087
            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
2026-09-09 00:00 UT   08 18 00.9   -07 17 20     2.242    1.678   44.4   24.8   254   26.1 
2026-09-09 07:47 UT   08 18 40.9   -07 22 42     2.242    1.679   44.5   24.9   254   26.1 
2026-09-10 00:00 UT   08 20 03.9   -07 33 52     2.240    1.681   44.7   24.9   255   26.1 
2026-09-11 00:00 UT   08 22 06.4   -07 50 27     2.238    1.685   45.1   25.0   255   26.1 
2026-09-12 00:00 UT   08 24 08.3   -08 07 06     2.236    1.689   45.4   25.1   256   26.1 
2026-09-13 00:00 UT   08 26 09.6   -08 23 49     2.234    1.693   45.7   25.2   256   26.1 
2026-09-14 00:00 UT   08 28 10.3   -08 40 34     2.232    1.696   46.1   25.3   256   26.2 
2026-09-15 00:00 UT   08 30 10.4   -08 57 23     2.229    1.700   46.4   25.4   257   26.2 
2026-09-16 00:00 UT   08 32 09.9   -09 14 16     2.227    1.704   46.8   25.5   257   26.2 
2026-09-17 00:00 UT   08 34 08.8   -09 31 11     2.224    1.707   47.1   25.6   258   26.2 
2026-09-18 00:00 UT   08 36 07.2   -09 48 10     2.222    1.711   47.5   25.6   258   26.2 
2026-09-19 00:00 UT   08 38 05.0   -10 05 12     2.219    1.714   47.8   25.7   258   26.2 
2026-09-20 00:00 UT   08 40 02.2   -10 22 17     2.216    1.718   48.2   25.8   259   26.2 
2026-09-21 00:00 UT   08 41 58.8   -10 39 25     2.213    1.721   48.5   25.9   259   26.2 
2026-09-22 00:00 UT   08 43 54.8   -10 56 36     2.210    1.725   48.9   26.0   260   26.2 
2026-09-23 00:00 UT   08 45 50.3   -11 13 50     2.207    1.728   49.2   26.1   260   26.2 
2026-09-24 00:00 UT   08 47 45.2   -11 31 07     2.204    1.731   49.6   26.2   260   26.2 

    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.