(737) Arequipa
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	15 Aug 2026	14.9	3.221 AU	4.217 AU	09h05m	+09°01'	9.2°	2.9°
Opposition	5 Mar 2027	13.3	3.130 AU	2.142 AU	10h54m	+00°13'	173.7°	2.0°

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) : 184.56133
            ω (Argument of perihelion)      : 134.51407
            M (Mean anomaly)                : 108.46935
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 139.74756
            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
2026-08-15 00:00 UT   09 05 50.8   +09 01 12     4.217    3.221    9.2    2.9   235   14.9 
2026-08-15 19:11 UT   09 06 54.9   +08 57 00     4.215    3.221    9.5    3.0   237   14.9 
2026-08-16 00:00 UT   09 07 11.0   +08 55 57     4.215    3.221    9.6    3.0   238   14.9 
2026-08-17 00:00 UT   09 08 31.2   +08 50 39     4.214    3.221   10.0    3.1   241   14.9 
2026-08-18 00:00 UT   09 09 51.2   +08 45 19     4.212    3.221   10.4    3.3   243   14.9 
2026-08-19 00:00 UT   09 11 11.0   +08 39 57     4.210    3.222   10.9    3.4   246   14.9 
2026-08-20 00:00 UT   09 12 30.8   +08 34 32     4.208    3.222   11.3    3.5   248   14.9 
2026-08-21 00:00 UT   09 13 50.4   +08 29 05     4.206    3.222   11.8    3.7   250   14.9 
2026-08-22 00:00 UT   09 15 09.9   +08 23 36     4.204    3.222   12.3    3.8   252   14.9 
2026-08-23 00:00 UT   09 16 29.2   +08 18 04     4.201    3.223   12.8    4.0   254   14.9 
2026-08-24 00:00 UT   09 17 48.4   +08 12 30     4.198    3.223   13.3    4.1   256   14.9 
2026-08-25 00:00 UT   09 19 07.5   +08 06 54     4.196    3.223   13.8    4.3   257   14.9 
2026-08-26 00:00 UT   09 20 26.4   +08 01 16     4.193    3.223   14.3    4.5   259   14.9 
2026-08-27 00:00 UT   09 21 45.2   +07 55 36     4.189    3.223   14.9    4.6   260   15.0 
2026-08-28 00:00 UT   09 23 03.8   +07 49 54     4.186    3.223   15.4    4.8   261   15.0 
2026-08-29 00:00 UT   09 24 22.2   +07 44 10     4.183    3.224   16.0    4.9   262   15.0 
2026-08-30 00:00 UT   09 25 40.6   +07 38 23     4.179    3.224   16.5    5.1   263   15.0 
2026-08-31 00:00 UT   09 26 58.7   +07 32 35     4.175    3.224   17.1    5.3   264   15.0 
2026-09-01 00:00 UT   09 28 16.7   +07 26 45     4.171    3.224   17.7    5.4   265   15.0 
2026-09-02 00:00 UT   09 29 34.5   +07 20 53     4.167    3.224   18.2    5.6   266   15.0 
2026-09-03 00:00 UT   09 30 52.2   +07 14 59     4.163    3.224   18.8    5.8   267   15.0 
2026-09-04 00:00 UT   09 32 09.7   +07 09 03     4.158    3.224   19.4    6.0   268   15.0 
2026-09-05 00:00 UT   09 33 27.0   +07 03 06     4.154    3.224   20.0    6.1   269   15.0 
2026-09-06 00:00 UT   09 34 44.2   +06 57 06     4.149    3.225   20.6    6.3   270   15.0 
2026-09-07 00:00 UT   09 36 01.2   +06 51 05     4.144    3.225   21.2    6.5   270   15.0 
2026-09-08 00:00 UT   09 37 18.0   +06 45 03     4.139    3.225   21.8    6.6   271   15.0 
2026-09-09 00:00 UT   09 38 34.6   +06 38 58     4.134    3.225   22.3    6.8   272   15.0 

    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.