2020 HD7
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 Dec 2025	30.3	3.184 AU	2.332 AU	07h41m	+16°36'	144.2°	10.4°

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 2020 HD7 are:

            e (Eccentricity)                : 0.5305493
            a (Semimajor axis)              : 2.2330388
            i (Inclination)                 : 3.54316
            Ω (Longitude of ascending node) : 206.82681
            ω (Argument of perihelion)      : 56.38031
            M (Mean anomaly)                : 228.87799
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 263.15656
            B (Latitude of perihelion)      : 2.94992
            P (Orbital period in years)     : 3.34            
        

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
2025-12-11 00:00 UT   07 41 29.8   +16 36 17     2.332    3.184  144.2   10.4   286   30.3 
2025-12-11 01:15 UT   07 41 27.5   +16 36 19     2.332    3.184  144.3   10.4   286   30.3 
2025-12-12 00:00 UT   07 40 45.2   +16 36 51     2.321    3.181  145.4   10.1   287   30.3 
2025-12-13 00:00 UT   07 39 59.2   +16 37 28     2.310    3.178  146.6    9.8   287   30.3 
2025-12-14 00:00 UT   07 39 11.7   +16 38 09     2.299    3.176  147.8    9.5   287   30.2 
2025-12-15 00:00 UT   07 38 22.8   +16 38 54     2.289    3.173  149.0    9.2   288   30.2 
2025-12-16 00:00 UT   07 37 32.5   +16 39 43     2.279    3.171  150.2    8.9   288   30.2 
2025-12-17 00:00 UT   07 36 40.9   +16 40 36     2.269    3.168  151.4    8.6   288   30.2 
2025-12-18 00:00 UT   07 35 48.0   +16 41 33     2.259    3.165  152.6    8.2   289   30.1 
2025-12-19 00:00 UT   07 34 53.8   +16 42 33     2.250    3.163  153.8    7.9   289   30.1 
2025-12-20 00:00 UT   07 33 58.4   +16 43 37     2.241    3.160  155.0    7.6   290   30.1 
2025-12-21 00:00 UT   07 33 01.7   +16 44 44     2.232    3.157  156.2    7.2   290   30.1 
2025-12-22 00:00 UT   07 32 03.8   +16 45 55     2.224    3.155  157.4    6.9   291   30.0 
2025-12-23 00:00 UT   07 31 04.8   +16 47 09     2.215    3.152  158.7    6.5   292   30.0 
2025-12-24 00:00 UT   07 30 04.7   +16 48 26     2.207    3.149  159.9    6.2   292   30.0 
2025-12-25 00:00 UT   07 29 03.6   +16 49 46     2.200    3.146  161.1    5.8   293   30.0 
2025-12-26 00:00 UT   07 28 01.4   +16 51 10     2.192    3.144  162.3    5.5   294   29.9 
2025-12-27 00:00 UT   07 26 58.3   +16 52 36     2.185    3.141  163.5    5.1   296   29.9 
2025-12-28 00:00 UT   07 25 54.3   +16 54 05     2.179    3.138  164.7    4.7   297   29.9 
2025-12-29 00:00 UT   07 24 49.5   +16 55 37     2.172    3.135  165.9    4.4   299   29.9 
2025-12-30 00:00 UT   07 23 43.8   +16 57 11     2.166    3.132  167.1    4.0   301   29.8 
2025-12-31 00:00 UT   07 22 37.4   +16 58 47     2.160    3.130  168.3    3.7   303   29.8 
2026-01-01 00:00 UT   07 21 30.3   +17 00 26     2.155    3.127  169.4    3.3   306   29.8 
2026-01-02 00:00 UT   07 20 22.6   +17 02 07     2.150    3.124  170.5    3.0   310   29.7 
2026-01-03 00:00 UT   07 19 14.3   +17 03 50     2.145    3.121  171.6    2.6   315   29.7 
2026-01-04 00:00 UT   07 18 05.4   +17 05 35     2.140    3.118  172.6    2.3   321   29.7 
2026-01-05 00:00 UT   07 16 56.1   +17 07 21     2.136    3.115  173.4    2.1   328   29.7 
2026-01-06 00:00 UT   07 15 46.4   +17 09 10     2.132    3.112  174.2    1.8   338   29.6 
2026-01-07 00:00 UT   07 14 36.3   +17 10 60     2.129    3.109  174.7    1.7   350   29.6 
2026-01-08 00:00 UT   07 13 26.0   +17 12 51     2.126    3.106  174.9    1.6     5   29.6 
2026-01-09 00:00 UT   07 12 15.4   +17 14 44     2.123    3.103  174.8    1.7    19   29.6 
2026-01-10 00:00 UT   07 11 04.7   +17 16 38     2.120    3.100  174.4    1.8    32   29.6 

    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.