2018 HA1
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	9 Oct 2026	26.2	1.777 AU	2.149 AU	09h15m	-15°55'	55.0°	27.4°

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
2026-10-09 00:00 UT   09 15 20.2   -15 55 52     2.149    1.777   55.0   27.4   266   26.2 
2026-10-09 08:46 UT   09 15 58.9   -16 02 26     2.148    1.778   55.2   27.5   266   26.2 
2026-10-10 00:00 UT   09 17 05.9   -16 13 52     2.145    1.779   55.4   27.5   267   26.2 
2026-10-11 00:00 UT   09 18 51.0   -16 31 54     2.141    1.782   55.8   27.6   267   26.2 
2026-10-12 00:00 UT   09 20 35.5   -16 49 57     2.136    1.785   56.2   27.7   267   26.2 
2026-10-13 00:00 UT   09 22 19.3   -17 08 04     2.132    1.787   56.5   27.8   268   26.2 
2026-10-14 00:00 UT   09 24 02.6   -17 26 12     2.127    1.790   56.9   27.8   268   26.2 
2026-10-15 00:00 UT   09 25 45.2   -17 44 22     2.123    1.792   57.3   27.9   269   26.2 
2026-10-16 00:00 UT   09 27 27.3   -18 02 34     2.118    1.795   57.7   28.0   269   26.2 
2026-10-17 00:00 UT   09 29 08.7   -18 20 48     2.113    1.798   58.1   28.1   269   26.2 
2026-10-18 00:00 UT   09 30 49.4   -18 39 04     2.108    1.800   58.5   28.2   270   26.2 
2026-10-19 00:00 UT   09 32 29.6   -18 57 21     2.103    1.802   58.9   28.2   270   26.2 
2026-10-20 00:00 UT   09 34 09.1   -19 15 41     2.098    1.805   59.2   28.3   271   26.2 
2026-10-21 00:00 UT   09 35 48.0   -19 34 02     2.093    1.807   59.6   28.4   271   26.2 
2026-10-22 00:00 UT   09 37 26.3   -19 52 25     2.088    1.809   60.0   28.5   271   26.2 
2026-10-23 00:00 UT   09 39 03.9   -20 10 49     2.083    1.812   60.4   28.5   272   26.2 
2026-10-24 00:00 UT   09 40 40.9   -20 29 15     2.077    1.814   60.8   28.6   272   26.2 
2026-10-25 00:00 UT   09 42 17.2   -20 47 43     2.072    1.816   61.2   28.7   272   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.