(737) Arequipa
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Sep 2025	14.4	2.773 AU	2.856 AU	06h37m	+11°36'	75.1°	20.5°
Opposition	29 Dec 2025	13.3	2.986 AU	2.037 AU	06h30m	+04°57'	161.7°	5.9°

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 Arequipa are:

            e (Eccentricity)                : 0.2440162
            a (Semimajor axis)              : 2.5926213
            i (Inclination)                 : 12.36334
            Ω (Longitude of ascending node) : 184.56132
            ω (Argument of perihelion)      : 134.51407
            M (Mean anomaly)                : 108.46935
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 139.74755
            B (Latitude of perihelion)      : 8.78212
            P (Orbital period in years)     : 4.17            
        

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
2025-09-17 00:00 UT   06 37 06.1   +11 36 32     2.856    2.773   75.1   20.5   271   14.4 
2025-09-17 22:15 UT   06 38 01.6   +11 31 59     2.846    2.775   75.7   20.5   271   14.4 
2025-09-18 00:00 UT   06 38 05.9   +11 31 38     2.845    2.775   75.8   20.6   271   14.4 
2025-09-19 00:00 UT   06 39 04.8   +11 26 41     2.835    2.777   76.5   20.6   271   14.4 
2025-09-20 00:00 UT   06 40 02.8   +11 21 41     2.824    2.780   77.2   20.6   271   14.4 
2025-09-21 00:00 UT   06 40 59.8   +11 16 39     2.813    2.782   77.9   20.7   272   14.4 
2025-09-22 00:00 UT   06 41 55.8   +11 11 34     2.802    2.784   78.6   20.7   272   14.4 
2025-09-23 00:00 UT   06 42 50.9   +11 06 27     2.791    2.787   79.4   20.7   272   14.4 
2025-09-24 00:00 UT   06 43 45.0   +11 01 18     2.780    2.789   80.1   20.8   272   14.4 
2025-09-25 00:00 UT   06 44 38.1   +10 56 06     2.769    2.791   80.8   20.8   273   14.4 
2025-09-26 00:00 UT   06 45 30.1   +10 50 52     2.758    2.793   81.6   20.8   273   14.4 
2025-09-27 00:00 UT   06 46 21.2   +10 45 36     2.747    2.796   82.3   20.8   273   14.4 
2025-09-28 00:00 UT   06 47 11.1   +10 40 19     2.736    2.798   83.1   20.8   273   14.4 
2025-09-29 00:00 UT   06 48 00.1   +10 34 59     2.725    2.800   83.8   20.8   273   14.4 
2025-09-30 00:00 UT   06 48 47.9   +10 29 38     2.714    2.803   84.6   20.8   274   14.4 
2025-10-01 00:00 UT   06 49 34.7   +10 24 15     2.702    2.805   85.3   20.8   274   14.4 
2025-10-02 00:00 UT   06 50 20.4   +10 18 51     2.691    2.807   86.1   20.8   274   14.4 
2025-10-03 00:00 UT   06 51 05.0   +10 13 25     2.680    2.809   86.9   20.8   274   14.3 
2025-10-04 00:00 UT   06 51 48.5   +10 07 57     2.669    2.812   87.7   20.8   275   14.3 
2025-10-05 00:00 UT   06 52 30.8   +10 02 28     2.657    2.814   88.4   20.8   275   14.3 
2025-10-06 00:00 UT   06 53 12.0   +09 56 58     2.646    2.816   89.2   20.8   275   14.3 
2025-10-07 00:00 UT   06 53 52.1   +09 51 27     2.635    2.818   90.0   20.8   275   14.3 
2025-10-08 00:00 UT   06 54 31.0   +09 45 55     2.624    2.821   90.8   20.7   276   14.3 
2025-10-09 00:00 UT   06 55 08.7   +09 40 22     2.612    2.823   91.6   20.7   276   14.3 
2025-10-10 00:00 UT   06 55 45.2   +09 34 48     2.601    2.825   92.4   20.7   276   14.3 
2025-10-11 00:00 UT   06 56 20.5   +09 29 14     2.590    2.827   93.2   20.6   276   14.3 
2025-10-12 00:00 UT   06 56 54.6   +09 23 38     2.578    2.830   94.0   20.6   277   14.3 
2025-10-13 00:00 UT   06 57 27.4   +09 18 02     2.567    2.832   94.8   20.6   277   14.3 
2025-10-14 00:00 UT   06 57 59.0   +09 12 26     2.556    2.834   95.7   20.5   277   14.3 
2025-10-15 00:00 UT   06 58 29.3   +09 06 50     2.545    2.836   96.5   20.4   278   14.2 
2025-10-16 00:00 UT   06 58 58.3   +09 01 13     2.533    2.838   97.3   20.4   278   14.2 
2025-10-17 00:00 UT   06 59 26.0   +08 55 36     2.522    2.841   98.2   20.3   278   14.2 

    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.