(110) Lydia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	2 Aug 2025	11.5	2.523 AU	1.569 AU	22h35m	-19°11'	154.5°	10.0°
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)      : 282.23393
            M (Mean anomaly)                : 327.84122
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : -20.93398
            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
2025-08-02 00:00 UT   22 35 57.8   -19 11 00     1.569    2.523  154.5   10.0   269   11.5 
2025-08-02 11:02 UT   22 35 41.5   -19 13 31     1.567    2.523  154.9    9.8   269   11.5 
2025-08-03 00:00 UT   22 35 22.0   -19 16 28     1.564    2.523  155.5    9.6   270   11.5 
2025-08-04 00:00 UT   22 34 45.0   -19 21 58     1.559    2.522  156.5    9.2   271   11.4 
2025-08-05 00:00 UT   22 34 06.7   -19 27 29     1.555    2.522  157.5    8.9   272   11.4 
2025-08-06 00:00 UT   22 33 27.2   -19 33 00     1.551    2.522  158.5    8.5   274   11.4 
2025-08-07 00:00 UT   22 32 46.5   -19 38 32     1.547    2.522  159.5    8.1   275   11.4 
2025-08-08 00:00 UT   22 32 04.7   -19 44 04     1.543    2.522  160.5    7.7   277   11.3 
2025-08-09 00:00 UT   22 31 21.8   -19 49 35     1.540    2.521  161.5    7.3   279   11.3 
2025-08-10 00:00 UT   22 30 37.9   -19 55 05     1.536    2.521  162.4    7.0   281   11.3 
2025-08-11 00:00 UT   22 29 53.0   -20 00 34     1.533    2.521  163.4    6.6   284   11.3 
2025-08-12 00:00 UT   22 29 07.2   -20 06 00     1.531    2.521  164.3    6.3   286   11.3 
2025-08-13 00:00 UT   22 28 20.4   -20 11 25     1.528    2.521  165.1    5.9   289   11.2 
2025-08-14 00:00 UT   22 27 32.9   -20 16 46     1.526    2.521  166.0    5.6   292   11.2 
2025-08-15 00:00 UT   22 26 44.5   -20 22 05     1.524    2.520  166.8    5.3   296   11.2 
2025-08-16 00:00 UT   22 25 55.4   -20 27 20     1.522    2.520  167.5    5.0   300   11.2 
2025-08-17 00:00 UT   22 25 05.7   -20 32 31     1.521    2.520  168.2    4.7   305   11.2 
2025-08-18 00:00 UT   22 24 15.4   -20 37 37     1.519    2.520  168.8    4.5   310   11.1 
2025-08-19 00:00 UT   22 23 24.5   -20 42 38     1.518    2.520  169.3    4.3   316   11.1 
2025-08-20 00:00 UT   22 22 33.2   -20 47 34     1.518    2.520  169.7    4.1   322   11.1 
2025-08-21 00:00 UT   22 21 41.4   -20 52 24     1.517    2.519  169.9    4.0   328   11.1 
2025-08-22 00:00 UT   22 20 49.4   -20 57 08     1.517    2.519  170.1    4.0   335   11.1 
2025-08-23 00:00 UT   22 19 57.0   -21 01 45     1.517    2.519  170.1    4.0   342   11.1 
2025-08-24 00:00 UT   22 19 04.5   -21 06 15     1.517    2.519  169.9    4.0   349   11.1 
2025-08-25 00:00 UT   22 18 11.9   -21 10 37     1.518    2.519  169.7    4.1   355   11.1 
2025-08-26 00:00 UT   22 17 19.3   -21 14 51     1.519    2.519  169.3    4.3     2   11.1 
2025-08-27 00:00 UT   22 16 26.7   -21 18 57     1.520    2.519  168.8    4.5     7   11.1 
2025-08-28 00:00 UT   22 15 34.2   -21 22 55     1.521    2.518  168.2    4.7    12   11.2 
2025-08-29 00:00 UT   22 14 41.9   -21 26 44     1.523    2.518  167.5    5.0    17   11.2 
2025-08-30 00:00 UT   22 13 49.9   -21 30 23     1.525    2.518  166.8    5.3    21   11.2 
2025-08-31 00:00 UT   22 12 58.2   -21 33 53     1.527    2.518  166.0    5.6    25   11.2 
2025-09-01 00:00 UT   22 12 06.8   -21 37 13     1.529    2.518  165.1    5.9    28   11.2 

    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.