(110) Lydia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Mar 2025	13.3	2.582 AU	3.099 AU	20h41m	-22°22'	50.5°	17.3°
Opposition	21 Aug 2025	11.1	2.519 AU	1.517 AU	22h21m	-20°54'	170.0°	4.0°

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 Lydia are:

            e (Eccentricity)                : 0.0792773
            a (Semimajor axis)              : 2.7332330
            i (Inclination)                 : 5.95939
            Ω (Longitude of ascending node) : 56.76763
            ω (Argument of perihelion)      : 282.23394
            M (Mean anomaly)                : 327.84121
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : -20.93397
            B (Latitude of perihelion)      : -5.82358
            P (Orbital period in years)     : 4.52            
        

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
2025-03-18 00:00 UT   20 41 36.2   -22 22 17     3.099    2.582   50.5   17.3   252   13.3 
2025-03-18 06:30 UT   20 42 04.1   -22 20 58     3.096    2.582   50.6   17.3   252   13.3 
2025-03-19 00:00 UT   20 43 19.2   -22 17 27     3.089    2.582   51.1   17.5   252   13.3 
2025-03-20 00:00 UT   20 45 01.8   -22 12 35     3.078    2.581   51.7   17.6   252   13.3 
2025-03-21 00:00 UT   20 46 43.9   -22 07 43     3.067    2.581   52.2   17.8   251   13.3 
2025-03-22 00:00 UT   20 48 25.7   -22 02 49     3.057    2.580   52.8   17.9   251   13.3 
2025-03-23 00:00 UT   20 50 07.0   -21 57 53     3.046    2.579   53.4   18.1   251   13.3 
2025-03-24 00:00 UT   20 51 47.9   -21 52 57     3.035    2.579   54.0   18.2   251   13.3 
2025-03-25 00:00 UT   20 53 28.3   -21 47 60     3.024    2.578   54.6   18.4   251   13.3 
2025-03-26 00:00 UT   20 55 08.3   -21 43 01     3.013    2.577   55.2   18.5   251   13.3 
2025-03-27 00:00 UT   20 56 47.8   -21 38 02     3.002    2.577   55.8   18.7   251   13.3 
2025-03-28 00:00 UT   20 58 26.9   -21 33 02     2.991    2.576   56.4   18.8   251   13.3 
2025-03-29 00:00 UT   21 00 05.5   -21 28 02     2.980    2.576   57.0   19.0   251   13.3 
2025-03-30 00:00 UT   21 01 43.7   -21 23 01     2.968    2.575   57.6   19.1   251   13.2 
2025-03-31 00:00 UT   21 03 21.3   -21 17 60     2.957    2.574   58.2   19.3   251   13.2 
2025-04-01 00:00 UT   21 04 58.5   -21 12 58     2.946    2.574   58.8   19.4   251   13.2 
2025-04-02 00:00 UT   21 06 35.1   -21 07 57     2.934    2.573   59.4   19.5   251   13.2 
2025-04-03 00:00 UT   21 08 11.3   -21 02 55     2.923    2.573   60.0   19.7   250   13.2 
2025-04-04 00:00 UT   21 09 47.0   -20 57 53     2.911    2.572   60.6   19.8   250   13.2 
2025-04-05 00:00 UT   21 11 22.1   -20 52 51     2.899    2.572   61.2   19.9   250   13.2 
2025-04-06 00:00 UT   21 12 56.8   -20 47 49     2.888    2.571   61.8   20.1   250   13.2 
2025-04-07 00:00 UT   21 14 30.9   -20 42 48     2.876    2.570   62.4   20.2   250   13.2 
2025-04-08 00:00 UT   21 16 04.5   -20 37 46     2.864    2.570   63.0   20.3   250   13.2 

    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.