(980) Anacostia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Jun 2025	11.4	2.535 AU	1.551 AU	19h01m	-26°59'	161.6°	7.3°
Opposition	1 Jul 2025	10.9	2.505 AU	1.489 AU	18h46m	-25°45'	177.1°	1.2°

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 Anacostia are:

            e (Eccentricity)                : 0.2016946
            a (Semimajor axis)              : 2.7416667
            i (Inclination)                 : 15.89589
            Ω (Longitude of ascending node) : 285.76210
            ω (Argument of perihelion)      : 69.75287
            M (Mean anomaly)                : 293.28836
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 354.77887
            B (Latitude of perihelion)      : 14.89012
            P (Orbital period in years)     : 4.54            
        

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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-06-17 00:00 UT   19 01 11.2   -26 59 24     1.551    2.535  161.6    7.3   277   11.4 
2025-06-17 06:13 UT   19 00 56.8   -26 58 14     1.550    2.535  161.9    7.2   277   11.4 
2025-06-18 00:00 UT   19 00 15.2   -26 54 50     1.545    2.533  162.7    6.8   278   11.4 
2025-06-19 00:00 UT   18 59 18.0   -26 50 11     1.539    2.531  163.9    6.4   278   11.3 
2025-06-20 00:00 UT   18 58 19.7   -26 45 27     1.534    2.529  165.0    6.0   279   11.3 
2025-06-21 00:00 UT   18 57 20.4   -26 40 39     1.529    2.527  166.2    5.5   280   11.3 
2025-06-22 00:00 UT   18 56 20.2   -26 35 45     1.524    2.525  167.3    5.1   282   11.2 
2025-06-23 00:00 UT   18 55 19.0   -26 30 46     1.519    2.523  168.5    4.6   283   11.2 
2025-06-24 00:00 UT   18 54 17.0   -26 25 41     1.514    2.521  169.6    4.2   285   11.2 
2025-06-25 00:00 UT   18 53 14.2   -26 20 32     1.510    2.519  170.8    3.7   287   11.1 
2025-06-26 00:00 UT   18 52 10.8   -26 15 18     1.506    2.517  171.9    3.3   289   11.1 
2025-06-27 00:00 UT   18 51 06.8   -26 09 59     1.502    2.514  173.0    2.8   292   11.1 
2025-06-28 00:00 UT   18 50 02.3   -26 04 34     1.499    2.512  174.1    2.4   297   11.0 
2025-06-29 00:00 UT   18 48 57.4   -25 59 05     1.496    2.510  175.1    2.0   303   11.0 
2025-06-30 00:00 UT   18 47 52.1   -25 53 31     1.493    2.508  176.1    1.6   313   11.0 
2025-07-01 00:00 UT   18 46 46.6   -25 47 52     1.490    2.506  176.9    1.3   328   10.9 
2025-07-02 00:00 UT   18 45 40.9   -25 42 08     1.488    2.504  177.3    1.1   350   10.9 
2025-07-03 00:00 UT   18 44 35.0   -25 36 20     1.486    2.502  177.3    1.1    16   10.9 
2025-07-04 00:00 UT   18 43 29.2   -25 30 28     1.484    2.500  176.8    1.3    37   10.9 
2025-07-05 00:00 UT   18 42 23.5   -25 24 31     1.483    2.498  175.9    1.6    51   10.9 
2025-07-06 00:00 UT   18 41 17.9   -25 18 29     1.482    2.496  175.0    2.0    60   11.0 
2025-07-07 00:00 UT   18 40 12.5   -25 12 24     1.481    2.494  173.9    2.5    66   11.0 
2025-07-08 00:00 UT   18 39 07.4   -25 06 15     1.480    2.492  172.8    2.9    70   11.0 
2025-07-09 00:00 UT   18 38 02.8   -25 00 02     1.479    2.490  171.7    3.4    73   11.0 
2025-07-10 00:00 UT   18 36 58.6   -24 53 46     1.479    2.488  170.6    3.8    76   11.1 
2025-07-11 00:00 UT   18 35 54.9   -24 47 27     1.479    2.486  169.4    4.3    78   11.1 
2025-07-12 00:00 UT   18 34 51.8   -24 41 05     1.480    2.483  168.3    4.8    79   11.1 
2025-07-13 00:00 UT   18 33 49.5   -24 34 40     1.480    2.481  167.1    5.2    81   11.1 
2025-07-14 00:00 UT   18 32 47.8   -24 28 12     1.481    2.479  165.9    5.7    82   11.2 
2025-07-15 00:00 UT   18 31 47.1   -24 21 42     1.482    2.477  164.8    6.2    83   11.2 
2025-07-16 00:00 UT   18 30 47.2   -24 15 10     1.484    2.475  163.6    6.7    84   11.2 
2025-07-17 00:00 UT   18 29 48.3   -24 08 36     1.485    2.473  162.4    7.1    84   11.2 

    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.