(51) Nemausa
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 May 2026	11.3	2.334 AU	1.486 AU	18h25m	-07°34'	137.5°	17.0°
Opposition	21 Jun 2026	10.8	2.360 AU	1.370 AU	17h59m	-06°07'	162.7°	7.4°

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 Nemausa are:

            e (Eccentricity)                : 0.0659272
            a (Semimajor axis)              : 2.3655479
            i (Inclination)                 : 9.97295
            Ω (Longitude of ascending node) : 175.87970
            ω (Argument of perihelion)      : 2.28194
            M (Mean anomaly)                : 26.54936
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 178.12719
            B (Latitude of perihelion)      : 0.39509
            P (Orbital period in years)     : 3.64            
        

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
2026-05-18 00:00 UT   18 25 57.8   -07 34 49     1.486    2.334  137.5   17.0   249   11.3 
2026-05-18 19:27 UT   18 25 39.3   -07 30 49     1.481    2.335  138.3   16.7   249   11.3 
2026-05-19 00:00 UT   18 25 34.9   -07 29 53     1.479    2.335  138.5   16.7   249   11.3 
2026-05-20 00:00 UT   18 25 10.2   -07 25 04     1.473    2.336  139.4   16.4   248   11.3 
2026-05-21 00:00 UT   18 24 43.8   -07 20 21     1.466    2.337  140.4   16.0   247   11.3 
2026-05-22 00:00 UT   18 24 15.8   -07 15 45     1.460    2.337  141.3   15.7   246   11.2 
2026-05-23 00:00 UT   18 23 46.0   -07 11 16     1.454    2.338  142.3   15.4   246   11.2 
2026-05-24 00:00 UT   18 23 14.7   -07 06 54     1.448    2.339  143.2   15.0   245   11.2 
2026-05-25 00:00 UT   18 22 41.7   -07 02 39     1.442    2.340  144.1   14.7   244   11.2 
2026-05-26 00:00 UT   18 22 07.1   -06 58 33     1.437    2.340  145.1   14.3   243   11.2 
2026-05-27 00:00 UT   18 21 31.0   -06 54 34     1.431    2.341  146.0   14.0   242   11.1 
2026-05-28 00:00 UT   18 20 53.4   -06 50 43     1.426    2.342  146.9   13.7   241   11.1 
2026-05-29 00:00 UT   18 20 14.4   -06 47 01     1.421    2.342  147.9   13.3   240   11.1 
2026-05-30 00:00 UT   18 19 33.8   -06 43 27     1.417    2.343  148.8   13.0   238   11.1 
2026-05-31 00:00 UT   18 18 51.9   -06 40 02     1.412    2.344  149.7   12.6   237   11.1 
2026-06-01 00:00 UT   18 18 08.7   -06 36 47     1.408    2.345  150.6   12.3   236   11.0 
2026-06-02 00:00 UT   18 17 24.1   -06 33 40     1.404    2.345  151.5   11.9   234   11.0 
2026-06-03 00:00 UT   18 16 38.3   -06 30 43     1.400    2.346  152.4   11.6   233   11.0 
2026-06-04 00:00 UT   18 15 51.3   -06 27 55     1.396    2.347  153.2   11.2   231   11.0 
2026-06-05 00:00 UT   18 15 03.1   -06 25 17     1.393    2.348  154.1   10.9   230   11.0 
2026-06-06 00:00 UT   18 14 13.8   -06 22 50     1.390    2.348  154.9   10.6   228   11.0 
2026-06-07 00:00 UT   18 13 23.5   -06 20 32     1.387    2.349  155.7   10.2   226   10.9 
2026-06-08 00:00 UT   18 12 32.2   -06 18 25     1.384    2.350  156.5    9.9   224   10.9 
2026-06-09 00:00 UT   18 11 39.9   -06 16 28     1.382    2.351  157.2    9.6   221   10.9 
2026-06-10 00:00 UT   18 10 46.8   -06 14 43     1.379    2.351  158.0    9.3   219   10.9 
2026-06-11 00:00 UT   18 09 52.8   -06 13 08     1.377    2.352  158.7    9.0   217   10.9 
2026-06-12 00:00 UT   18 08 58.1   -06 11 44     1.375    2.353  159.3    8.8   214   10.9 
2026-06-13 00:00 UT   18 08 02.8   -06 10 31     1.374    2.354  159.9    8.5   211   10.9 
2026-06-14 00:00 UT   18 07 06.8   -06 09 29     1.372    2.354  160.5    8.3   208   10.8 
2026-06-15 00:00 UT   18 06 10.4   -06 08 39     1.371    2.355  161.0    8.1   205   10.8 
2026-06-16 00:00 UT   18 05 13.5   -06 07 60     1.370    2.356  161.4    7.9   201   10.8 
2026-06-17 00:00 UT   18 04 16.2   -06 07 32     1.370    2.356  161.8    7.7   198   10.8 

    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.