(737) Arequipa
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Oct 2025	14.2	2.841 AU	2.522 AU	06h59m	+08°55'	98.2°	20.3°
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.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-10-17 00:00 UT   06 59 26.0   +08 55 36     2.522    2.841   98.2   20.3   278   14.2 
2025-10-17 22:17 UT   06 59 50.5   +08 50 24     2.512    2.843   98.9   20.3   278   14.2 
2025-10-18 00:00 UT   06 59 52.4   +08 49 60     2.511    2.843   99.0   20.3   278   14.2 
2025-10-19 00:00 UT   07 00 17.4   +08 44 23     2.500    2.845   99.9   20.2   279   14.2 
2025-10-20 00:00 UT   07 00 41.1   +08 38 47     2.489    2.847  100.7   20.1   279   14.2 
2025-10-21 00:00 UT   07 01 03.4   +08 33 12     2.477    2.849  101.6   20.0   279   14.2 
2025-10-22 00:00 UT   07 01 24.4   +08 27 37     2.466    2.851  102.4   19.9   279   14.2 
2025-10-23 00:00 UT   07 01 43.9   +08 22 03     2.455    2.854  103.3   19.8   280   14.2 
2025-10-24 00:00 UT   07 02 02.1   +08 16 29     2.444    2.856  104.2   19.7   280   14.1 
2025-10-25 00:00 UT   07 02 18.9   +08 10 57     2.433    2.858  105.0   19.6   280   14.1 
2025-10-26 00:00 UT   07 02 34.2   +08 05 26     2.423    2.860  105.9   19.5   281   14.1 
2025-10-27 00:00 UT   07 02 48.1   +07 59 57     2.412    2.862  106.8   19.4   281   14.1 
2025-10-28 00:00 UT   07 03 00.5   +07 54 29     2.401    2.864  107.7   19.3   281   14.1 
2025-10-29 00:00 UT   07 03 11.5   +07 49 02     2.390    2.866  108.6   19.2   282   14.1 
2025-10-30 00:00 UT   07 03 21.1   +07 43 38     2.380    2.869  109.5   19.0   282   14.1 
2025-10-31 00:00 UT   07 03 29.1   +07 38 15     2.369    2.871  110.4   18.9   282   14.1 
2025-11-01 00:00 UT   07 03 35.7   +07 32 55     2.359    2.873  111.3   18.8   282   14.0 
2025-11-02 00:00 UT   07 03 40.9   +07 27 37     2.348    2.875  112.3   18.6   283   14.0 
2025-11-03 00:00 UT   07 03 44.5   +07 22 21     2.338    2.877  113.2   18.5   283   14.0 
2025-11-04 00:00 UT   07 03 46.6   +07 17 07     2.328    2.879  114.1   18.3   284   14.0 
2025-11-05 00:00 UT   07 03 47.2   +07 11 57     2.318    2.881  115.1   18.2   284   14.0 
2025-11-06 00:00 UT   07 03 46.4   +07 06 49     2.308    2.883  116.0   18.0   284   14.0 
2025-11-07 00:00 UT   07 03 44.0   +07 01 44     2.298    2.885  116.9   17.8   285   14.0 
2025-11-08 00:00 UT   07 03 40.0   +06 56 43     2.288    2.887  117.9   17.7   285   14.0 
2025-11-09 00:00 UT   07 03 34.6   +06 51 45     2.278    2.889  118.9   17.5   285   13.9 
2025-11-10 00:00 UT   07 03 27.6   +06 46 50     2.269    2.892  119.8   17.3   286   13.9 
2025-11-11 00:00 UT   07 03 19.1   +06 41 59     2.259    2.894  120.8   17.1   286   13.9 
2025-11-12 00:00 UT   07 03 09.0   +06 37 12     2.250    2.896  121.7   16.9   287   13.9 
2025-11-13 00:00 UT   07 02 57.4   +06 32 29     2.240    2.898  122.7   16.7   287   13.9 
2025-11-14 00:00 UT   07 02 44.2   +06 27 50     2.231    2.900  123.7   16.5   288   13.9 
2025-11-15 00:00 UT   07 02 29.5   +06 23 16     2.222    2.902  124.7   16.3   288   13.9 
2025-11-16 00:00 UT   07 02 13.3   +06 18 46     2.214    2.904  125.7   16.1   288   13.8 

    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.