(138) Tolosa
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	15 Sep 2024	11.5	2.134 AU	1.143 AU	00h24m	-02°44'	166.8°	6.2°
Opposition	24 Sep 2024	11.2	2.146 AU	1.145 AU	00h16m	-03°27'	175.2°	2.3°

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 Tolosa are:

            e (Eccentricity)                : 0.1616788
            a (Semimajor axis)              : 2.4489597
            i (Inclination)                 : 3.20214
            Ω (Longitude of ascending node) : 54.72076
            ω (Argument of perihelion)      : 260.69651
            M (Mean anomaly)                : 39.93823
            Epoch                           : 2024 Oct 17

            L (Longitude of perihelion)     : 135.40298
            B (Latitude of perihelion)      : -3.15998
            P (Orbital period in years)     : 3.83            
        

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
2024-09-15 00:00 UT   00 24 39.0   -02 44 06     1.143    2.134  166.8    6.2   268   11.5 
2024-09-15 17:44 UT   00 24 01.1   -02 47 34     1.142    2.135  167.6    5.8   270   11.4 
2024-09-16 00:00 UT   00 23 47.5   -02 48 47     1.142    2.135  167.9    5.7   270   11.4 
2024-09-17 00:00 UT   00 22 55.3   -02 53 28     1.141    2.137  169.0    5.2   273   11.4 
2024-09-18 00:00 UT   00 22 02.5   -02 58 08     1.141    2.138  170.1    4.7   276   11.4 
2024-09-19 00:00 UT   00 21 09.1   -03 02 48     1.141    2.139  171.1    4.2   280   11.4 
2024-09-20 00:00 UT   00 20 15.1   -03 07 26     1.141    2.140  172.1    3.7   285   11.3 
2024-09-21 00:00 UT   00 19 20.8   -03 12 02     1.142    2.142  173.0    3.3   291   11.3 
2024-09-22 00:00 UT   00 18 26.2   -03 16 36     1.142    2.143  173.9    2.9   298   11.3 
2024-09-23 00:00 UT   00 17 31.3   -03 21 07     1.143    2.144  174.5    2.6   308   11.3 
2024-09-24 00:00 UT   00 16 36.3   -03 25 35     1.144    2.146  175.0    2.3   321   11.3 
2024-09-25 00:00 UT   00 15 41.2   -03 29 58     1.146    2.147  175.2    2.2   335   11.2 
2024-09-26 00:00 UT   00 14 46.1   -03 34 18     1.147    2.148  175.1    2.3   350   11.3 
2024-09-27 00:00 UT   00 13 51.0   -03 38 32     1.149    2.149  174.7    2.4     3   11.3 
2024-09-28 00:00 UT   00 12 56.2   -03 42 41     1.152    2.151  174.1    2.7    14   11.3 
2024-09-29 00:00 UT   00 12 01.7   -03 46 45     1.154    2.152  173.3    3.1    22   11.3 
2024-09-30 00:00 UT   00 11 07.5   -03 50 42     1.157    2.153  172.5    3.5    29   11.4 
2024-10-01 00:00 UT   00 10 13.7   -03 54 32     1.160    2.155  171.5    3.9    34   11.4 
2024-10-02 00:00 UT   00 09 20.5   -03 58 16     1.163    2.156  170.5    4.4    38   11.4 
2024-10-03 00:00 UT   00 08 27.9   -04 01 51     1.166    2.158  169.4    4.9    41   11.5 
2024-10-04 00:00 UT   00 07 36.0   -04 05 19     1.170    2.159  168.3    5.4    44   11.5 
2024-10-05 00:00 UT   00 06 44.8   -04 08 38     1.174    2.160  167.2    5.9    46   11.5 
2024-10-06 00:00 UT   00 05 54.6   -04 11 48     1.178    2.162  166.1    6.4    48   11.6 
2024-10-07 00:00 UT   00 05 05.2   -04 14 49     1.182    2.163  165.0    6.9    50   11.6 
2024-10-08 00:00 UT   00 04 16.8   -04 17 41     1.187    2.164  163.8    7.4    51   11.6 
2024-10-09 00:00 UT   00 03 29.5   -04 20 23     1.192    2.166  162.7    7.9    52   11.7 
2024-10-10 00:00 UT   00 02 43.4   -04 22 55     1.197    2.167  161.5    8.4    54   11.7 
2024-10-11 00:00 UT   00 01 58.4   -04 25 17     1.202    2.169  160.4    8.9    54   11.7 
2024-10-12 00:00 UT   00 01 14.7   -04 27 28     1.208    2.170  159.3    9.4    55   11.8 
2024-10-13 00:00 UT   00 00 32.3   -04 29 29     1.213    2.172  158.1    9.8    56   11.8 
2024-10-14 00:00 UT   23 59 51.2   -04 31 18     1.220    2.173  157.0   10.3    57   11.8 
2024-10-15 00:00 UT   23 59 11.6   -04 32 57     1.226    2.174  155.9   10.8    57   11.8 

    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.