(90377) Sedna
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	21 Nov 2024	20.7	83.430 AU	82.464 AU	04h01m	+08°24'	168.0°	0.1°
Today	2 Dec 2024	20.7	83.422 AU	82.473 AU	04h01m	+08°22'	164.4°	0.2°

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 Sedna are:

            e (Eccentricity)                : 0.8607712
            a (Semimajor axis)              : 548.2997125
            i (Inclination)                 : 11.92869
            Ω (Longitude of ascending node) : 144.34714
            ω (Argument of perihelion)      : 310.84306
            M (Mean anomaly)                : 358.56644
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 95.80997
            B (Latitude of perihelion)      : -8.99596
            P (Orbital period in years)     : 12838.88            
        

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
2024-12-02 00:00 UT   04 01 11.4   +08 22 54    82.473   83.422  164.4    0.2    29   20.7 
2024-12-02 07:24 UT   04 01 10.6   +08 22 52    82.473   83.422  164.2    0.2    30   20.7 
2024-12-03 00:00 UT   04 01 08.9   +08 22 48    82.475   83.422  163.7    0.2    32   20.7 
2024-12-04 00:00 UT   04 01 06.5   +08 22 43    82.478   83.421  163.0    0.2    34   20.7 
2024-12-05 00:00 UT   04 01 04.1   +08 22 37    82.481   83.420  162.3    0.2    37   20.7 
2024-12-06 00:00 UT   04 01 01.6   +08 22 32    82.485   83.419  161.5    0.2    39   20.7 
2024-12-07 00:00 UT   04 00 59.2   +08 22 28    82.488   83.419  160.8    0.2    41   20.7 
2024-12-08 00:00 UT   04 00 56.8   +08 22 23    82.492   83.418  159.9    0.2    43   20.7 
2024-12-09 00:00 UT   04 00 54.5   +08 22 18    82.497   83.417  159.1    0.2    44   20.8 
2024-12-10 00:00 UT   04 00 52.1   +08 22 14    82.501   83.417  158.3    0.3    46   20.8 
2024-12-11 00:00 UT   04 00 49.7   +08 22 10    82.506   83.416  157.4    0.3    48   20.8 
2024-12-12 00:00 UT   04 00 47.4   +08 22 06    82.511   83.415  156.6    0.3    49   20.8 
2024-12-13 00:00 UT   04 00 45.0   +08 22 03    82.517   83.414  155.7    0.3    50   20.8 
2024-12-14 00:00 UT   04 00 42.7   +08 21 59    82.522   83.414  154.8    0.3    52   20.8 
2024-12-15 00:00 UT   04 00 40.4   +08 21 56    82.528   83.413  153.9    0.3    53   20.8 
2024-12-16 00:00 UT   04 00 38.2   +08 21 53    82.535   83.412  153.0    0.3    54   20.8 
2024-12-17 00:00 UT   04 00 35.9   +08 21 50    82.541   83.412  152.1    0.3    55   20.8 
2024-12-18 00:00 UT   04 00 33.7   +08 21 47    82.548   83.411  151.1    0.3    56   20.8 
2024-12-19 00:00 UT   04 00 31.5   +08 21 45    82.555   83.410  150.2    0.3    57   20.8 
2024-12-20 00:00 UT   04 00 29.3   +08 21 43    82.562   83.409  149.3    0.3    57   20.8 
2024-12-21 00:00 UT   04 00 27.1   +08 21 41    82.570   83.409  148.3    0.4    58   20.8 
2024-12-22 00:00 UT   04 00 24.9   +08 21 39    82.578   83.408  147.4    0.4    59   20.8 
2024-12-23 00:00 UT   04 00 22.8   +08 21 37    82.586   83.407  146.4    0.4    60   20.8 
2024-12-24 00:00 UT   04 00 20.7   +08 21 36    82.595   83.407  145.5    0.4    60   20.8 
2024-12-25 00:00 UT   04 00 18.6   +08 21 35    82.603   83.406  144.5    0.4    61   20.8 
2024-12-26 00:00 UT   04 00 16.6   +08 21 34    82.612   83.405  143.6    0.4    62   20.8 
2024-12-27 00:00 UT   04 00 14.6   +08 21 33    82.621   83.404  142.6    0.4    62   20.8 
2024-12-28 00:00 UT   04 00 12.6   +08 21 32    82.631   83.404  141.6    0.4    63   20.8 
2024-12-29 00:00 UT   04 00 10.6   +08 21 32    82.640   83.403  140.7    0.4    63   20.8 
2024-12-30 00:00 UT   04 00 08.7   +08 21 32    82.650   83.402  139.7    0.4    64   20.8 
2024-12-31 00:00 UT   04 00 06.8   +08 21 32    82.660   83.402  138.7    0.4    64   20.8 
2025-01-01 00:00 UT   04 00 04.9   +08 21 32    82.671   83.401  137.8    0.5    65   20.8 

    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.