(141) Lumen
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	2 Aug 2025	11.1	2.318 AU	1.308 AU	21h20m	-17°19'	172.3°	3.4°
Opposition	7 Aug 2025	10.9	2.307 AU	1.293 AU	21h14m	-17°08'	178.5°	0.7°

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 Lumen are:

            e (Eccentricity)                : 0.2131070
            a (Semimajor axis)              : 2.6668886
            i (Inclination)                 : 11.89498
            Ω (Longitude of ascending node) : 318.43881
            ω (Argument of perihelion)      : 57.87407
            M (Mean anomaly)                : 297.36470
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 15.75015
            B (Latitude of perihelion)      : 10.05293
            P (Orbital period in years)     : 4.36            
        

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
2025-08-02 00:00 UT   21 20 34.3   -17 19 16     1.308    2.318  172.3    3.4   265   11.1 
2025-08-02 11:00 UT   21 20 05.9   -17 18 27     1.307    2.317  172.8    3.1   266   11.1 
2025-08-03 00:00 UT   21 19 32.2   -17 17 28     1.305    2.316  173.5    2.9   266   11.1 
2025-08-04 00:00 UT   21 18 29.5   -17 15 38     1.302    2.314  174.6    2.4   269   11.0 
2025-08-05 00:00 UT   21 17 26.2   -17 13 47     1.299    2.312  175.8    1.8   272   11.0 
2025-08-06 00:00 UT   21 16 22.5   -17 11 53     1.296    2.310  176.9    1.3   277   10.9 
2025-08-07 00:00 UT   21 15 18.5   -17 09 58     1.294    2.308  178.0    0.9   289   10.9 
2025-08-08 00:00 UT   21 14 14.1   -17 08 00     1.292    2.306  178.9    0.5   322   10.9 
2025-08-09 00:00 UT   21 13 09.6   -17 06 00     1.290    2.304  178.7    0.6    22   10.9 
2025-08-10 00:00 UT   21 12 04.9   -17 03 58     1.289    2.302  177.8    1.0    49   10.9 
2025-08-11 00:00 UT   21 11 00.2   -17 01 53     1.287    2.300  176.7    1.4    60   10.9 
2025-08-12 00:00 UT   21 09 55.6   -16 59 45     1.286    2.298  175.6    2.0    65   11.0 
2025-08-13 00:00 UT   21 08 51.0   -16 57 34     1.286    2.296  174.4    2.5    68   11.0 
2025-08-14 00:00 UT   21 07 46.7   -16 55 21     1.285    2.294  173.2    3.0    70   11.0 
2025-08-15 00:00 UT   21 06 42.7   -16 53 05     1.285    2.292  172.0    3.5    71   11.1 
2025-08-16 00:00 UT   21 05 39.0   -16 50 45     1.285    2.290  170.8    4.0    72   11.1 
2025-08-17 00:00 UT   21 04 35.8   -16 48 23     1.285    2.288  169.7    4.6    73   11.1 
2025-08-18 00:00 UT   21 03 33.2   -16 45 57     1.285    2.286  168.5    5.1    74   11.1 
2025-08-19 00:00 UT   21 02 31.2   -16 43 27     1.286    2.284  167.3    5.6    74   11.2 
2025-08-20 00:00 UT   21 01 29.9   -16 40 55     1.287    2.282  166.1    6.1    75   11.2 
2025-08-21 00:00 UT   21 00 29.4   -16 38 19     1.288    2.280  164.9    6.6    75   11.2 
2025-08-22 00:00 UT   20 59 29.8   -16 35 39     1.290    2.278  163.7    7.1    75   11.2 
2025-08-23 00:00 UT   20 58 31.2   -16 32 55     1.292    2.277  162.5    7.7    76   11.3 
2025-08-24 00:00 UT   20 57 33.6   -16 30 08     1.293    2.275  161.4    8.2    76   11.3 
2025-08-25 00:00 UT   20 56 37.2   -16 27 18     1.296    2.273  160.2    8.7    76   11.3 
2025-08-26 00:00 UT   20 55 41.9   -16 24 23     1.298    2.271  159.0    9.2    76   11.3 
2025-08-27 00:00 UT   20 54 48.0   -16 21 25     1.301    2.269  157.9    9.7    77   11.4 
2025-08-28 00:00 UT   20 53 55.3   -16 18 23     1.304    2.267  156.7   10.1    77   11.4 
2025-08-29 00:00 UT   20 53 04.1   -16 15 17     1.307    2.265  155.6   10.6    77   11.4 
2025-08-30 00:00 UT   20 52 14.3   -16 12 07     1.310    2.263  154.4   11.1    77   11.4 
2025-08-31 00:00 UT   20 51 26.1   -16 08 53     1.314    2.261  153.3   11.6    77   11.5 
2025-09-01 00:00 UT   20 50 39.4   -16 05 36     1.318    2.260  152.1   12.1    77   11.5 

    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.