2021 DL
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	25 Jul 2026	28.7	2.316 AU	1.451 AU	22h58m	-08°21'	139.0°	16.7°

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 2021 DL are:

            e (Eccentricity)                : 0.4099739
            a (Semimajor axis)              : 1.7260319
            i (Inclination)                 : 5.15536
            Ω (Longitude of ascending node) : 337.80607
            ω (Argument of perihelion)      : 190.20405
            M (Mean anomaly)                : 26.52781
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 347.96970
            B (Latitude of perihelion)      : -0.91210
            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
2026-07-25 00:00 UT   22 58 47.4   -08 21 39     1.451    2.316  139.0   16.7   249   28.7 
2026-07-25 02:28 UT   22 58 42.7   -08 21 60     1.450    2.316  139.1   16.7   249   28.7 
2026-07-26 00:00 UT   22 58 00.2   -08 25 04     1.445    2.318  140.2   16.3   249   28.6 
2026-07-27 00:00 UT   22 57 11.1   -08 28 38     1.439    2.320  141.3   15.9   250   28.6 
2026-07-28 00:00 UT   22 56 20.1   -08 32 22     1.433    2.322  142.5   15.4   250   28.6 
2026-07-29 00:00 UT   22 55 27.2   -08 36 16     1.427    2.324  143.7   15.0   250   28.6 
2026-07-30 00:00 UT   22 54 32.4   -08 40 18     1.422    2.326  144.9   14.5   250   28.5 
2026-07-31 00:00 UT   22 53 35.8   -08 44 29     1.416    2.329  146.1   14.1   250   28.5 
2026-08-01 00:00 UT   22 52 37.4   -08 48 50     1.411    2.331  147.3   13.6   250   28.5 
2026-08-02 00:00 UT   22 51 37.2   -08 53 18     1.406    2.333  148.5   13.1   250   28.5 
2026-08-03 00:00 UT   22 50 35.4   -08 57 55     1.402    2.335  149.7   12.7   250   28.5 
2026-08-04 00:00 UT   22 49 31.8   -09 02 39     1.397    2.337  150.9   12.2   250   28.4 
2026-08-05 00:00 UT   22 48 26.6   -09 07 31     1.393    2.339  152.2   11.7   250   28.4 
2026-08-06 00:00 UT   22 47 19.8   -09 12 30     1.389    2.341  153.4   11.2   251   28.4 
2026-08-07 00:00 UT   22 46 11.5   -09 17 36     1.385    2.343  154.7   10.7   251   28.4 
2026-08-08 00:00 UT   22 45 01.7   -09 22 48     1.382    2.345  155.9   10.2   251   28.3 
2026-08-09 00:00 UT   22 43 50.5   -09 28 07     1.379    2.347  157.2    9.6   251   28.3 
2026-08-10 00:00 UT   22 42 37.9   -09 33 31     1.376    2.348  158.5    9.1   251   28.3 
2026-08-11 00:00 UT   22 41 24.1   -09 39 00     1.373    2.350  159.7    8.6   251   28.3 
2026-08-12 00:00 UT   22 40 09.0   -09 44 34     1.371    2.352  161.0    8.1   252   28.2 
2026-08-13 00:00 UT   22 38 52.8   -09 50 13     1.368    2.354  162.3    7.5   252   28.2 
2026-08-14 00:00 UT   22 37 35.5   -09 55 55     1.366    2.356  163.6    7.0   252   28.2 
2026-08-15 00:00 UT   22 36 17.2   -10 01 40     1.365    2.358  164.9    6.4   252   28.2 
2026-08-16 00:00 UT   22 34 58.1   -10 07 28     1.363    2.359  166.2    5.9   253   28.1 
2026-08-17 00:00 UT   22 33 38.1   -10 13 18     1.362    2.361  167.5    5.3   253   28.1 
2026-08-18 00:00 UT   22 32 17.4   -10 19 10     1.362    2.363  168.8    4.8   254   28.1 
2026-08-19 00:00 UT   22 30 56.1   -10 25 03     1.361    2.364  170.1    4.2   254   28.0 
2026-08-20 00:00 UT   22 29 34.3   -10 30 57     1.361    2.366  171.4    3.7   255   28.0 
2026-08-21 00:00 UT   22 28 12.0   -10 36 51     1.361    2.368  172.7    3.1   256   28.0 
2026-08-22 00:00 UT   22 26 49.3   -10 42 45     1.361    2.369  174.0    2.6   257   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.