(335) Roberta
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	13 Oct 2026	14.8	2.834 AU	3.406 AU	10h12m	+10°06'	47.8°	15.1°
Opposition	6 Mar 2027	12.4	2.652 AU	1.661 AU	11h10m	+07°53'	177.6°	0.9°

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 Roberta are:

            e (Eccentricity)                : 0.1709091
            a (Semimajor axis)              : 2.4779969
            i (Inclination)                 : 5.10518
            Ω (Longitude of ascending node) : 148.35687
            ω (Argument of perihelion)      : 140.15575
            M (Mean anomaly)                : 186.31859
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 108.62461
            B (Latitude of perihelion)      : 3.26835
            P (Orbital period in years)     : 3.90            
        

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
2026-10-13 00:00 UT   10 12 55.4   +10 06 25     3.406    2.834   47.8   15.1   290   14.8 
2026-10-13 02:26 UT   10 13 03.5   +10 05 44     3.405    2.834   47.8   15.1   290   14.8 
2026-10-14 00:00 UT   10 14 15.3   +09 59 39     3.395    2.833   48.4   15.3   290   14.8 
2026-10-15 00:00 UT   10 15 35.0   +09 52 53     3.383    2.832   49.1   15.4   290   14.8 
2026-10-16 00:00 UT   10 16 54.2   +09 46 07     3.372    2.831   49.7   15.6   290   14.8 
2026-10-17 00:00 UT   10 18 13.2   +09 39 23     3.360    2.830   50.4   15.7   290   14.8 
2026-10-18 00:00 UT   10 19 31.7   +09 32 39     3.348    2.829   51.0   15.9   290   14.8 
2026-10-19 00:00 UT   10 20 50.0   +09 25 56     3.336    2.828   51.7   16.0   291   14.8 
2026-10-20 00:00 UT   10 22 07.8   +09 19 13     3.324    2.827   52.3   16.2   291   14.8 
2026-10-21 00:00 UT   10 23 25.3   +09 12 32     3.312    2.827   53.0   16.3   291   14.8 
2026-10-22 00:00 UT   10 24 42.4   +09 05 52     3.300    2.826   53.6   16.5   291   14.8 
2026-10-23 00:00 UT   10 25 59.1   +08 59 13     3.287    2.825   54.3   16.6   291   14.8 
2026-10-24 00:00 UT   10 27 15.4   +08 52 35     3.275    2.824   55.0   16.8   291   14.8 
2026-10-25 00:00 UT   10 28 31.3   +08 45 58     3.262    2.823   55.6   16.9   291   14.8 
2026-10-26 00:00 UT   10 29 46.9   +08 39 23     3.250    2.822   56.3   17.0   291   14.8 
2026-10-27 00:00 UT   10 31 02.0   +08 32 49     3.237    2.821   57.0   17.2   291   14.8 
2026-10-28 00:00 UT   10 32 16.7   +08 26 17     3.224    2.820   57.6   17.3   291   14.8 
2026-10-29 00:00 UT   10 33 31.1   +08 19 46     3.211    2.819   58.3   17.4   291   14.8 
2026-10-30 00:00 UT   10 34 44.9   +08 13 16     3.198    2.818   59.0   17.6   291   14.8 
2026-10-31 00:00 UT   10 35 58.4   +08 06 49     3.185    2.817   59.7   17.7   291   14.8 
2026-11-01 00:00 UT   10 37 11.5   +08 00 23     3.172    2.816   60.3   17.8   291   14.8 
2026-11-02 00:00 UT   10 38 24.0   +07 53 59     3.159    2.815   61.0   18.0   292   14.8 
2026-11-03 00:00 UT   10 39 36.2   +07 47 37     3.145    2.814   61.7   18.1   292   14.8 
2026-11-04 00:00 UT   10 40 47.9   +07 41 17     3.132    2.813   62.4   18.2   292   14.7 
2026-11-05 00:00 UT   10 41 59.1   +07 34 60     3.118    2.812   63.1   18.3   292   14.7 
2026-11-06 00:00 UT   10 43 09.8   +07 28 44     3.105    2.811   63.8   18.4   292   14.7 
2026-11-07 00:00 UT   10 44 20.1   +07 22 31     3.091    2.810   64.5   18.6   292   14.7 

    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.