(139) Juewa
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	20 Mar 2025	10.6	2.318 AU	1.322 AU	12h03m	+00°09'	179.0°	0.4°
Today	19 Apr 2025	11.5	2.332 AU	1.429 AU	11h38m	-00°10'	146.2°	13.8°

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 Juewa are:

            e (Eccentricity)                : 0.1701350
            a (Semimajor axis)              : 2.7851378
            i (Inclination)                 : 10.87201
            Ω (Longitude of ascending node) : 1.67162
            ω (Argument of perihelion)      : 167.27872
            M (Mean anomaly)                : 17.56543
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : -10.82856
            B (Latitude of perihelion)      : 2.38045
            P (Orbital period in years)     : 4.65            
        

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
2025-04-19 00:00 UT   11 38 34.2   +00 10 08     1.429    2.332  146.2   13.8   110   11.5 
2025-04-19 21:49 UT   11 38 06.3   +00 11 52     1.436    2.333  145.3   14.2   110   11.5 
2025-04-20 00:00 UT   11 38 03.6   +00 12 03     1.436    2.333  145.2   14.2   110   11.5 
2025-04-21 00:00 UT   11 37 34.6   +00 14 03     1.444    2.333  144.1   14.6   110   11.5 
2025-04-22 00:00 UT   11 37 07.3   +00 16 10     1.451    2.334  143.0   15.0   110   11.5 
2025-04-23 00:00 UT   11 36 41.7   +00 18 24     1.459    2.335  142.0   15.4   110   11.6 
2025-04-24 00:00 UT   11 36 17.9   +00 20 44     1.467    2.335  140.9   15.8   110   11.6 
2025-04-25 00:00 UT   11 35 55.8   +00 23 10     1.475    2.336  139.9   16.1   110   11.6 
2025-04-26 00:00 UT   11 35 35.4   +00 25 43     1.483    2.337  138.8   16.5   110   11.6 
2025-04-27 00:00 UT   11 35 16.8   +00 28 23     1.492    2.337  137.8   16.8   110   11.7 
2025-04-28 00:00 UT   11 35 00.0   +00 31 10     1.500    2.338  136.8   17.2   110   11.7 
2025-04-29 00:00 UT   11 34 45.0   +00 34 03     1.509    2.339  135.8   17.5   110   11.7 
2025-04-30 00:00 UT   11 34 31.7   +00 37 03     1.518    2.339  134.8   17.8   110   11.7 
2025-05-01 00:00 UT   11 34 20.2   +00 40 11     1.527    2.340  133.8   18.1   110   11.8 
2025-05-02 00:00 UT   11 34 10.5   +00 43 25     1.536    2.341  132.8   18.4   110   11.8 
2025-05-03 00:00 UT   11 34 02.6   +00 46 46     1.546    2.341  131.8   18.7   110   11.8 
2025-05-04 00:00 UT   11 33 56.4   +00 50 13     1.555    2.342  130.8   19.0   110   11.8 
2025-05-05 00:00 UT   11 33 52.0   +00 53 48     1.565    2.343  129.9   19.3   110   11.8 
2025-05-06 00:00 UT   11 33 49.4   +00 57 30     1.575    2.344  128.9   19.6   111   11.9 
2025-05-07 00:00 UT   11 33 48.4   -01 01 18     1.585    2.344  128.0   19.8   111   11.9 
2025-05-08 00:00 UT   11 33 49.2   -01 05 13     1.595    2.345  127.0   20.1   111   11.9 
2025-05-09 00:00 UT   11 33 51.7   -01 09 15     1.605    2.346  126.1   20.3   111   11.9 
2025-05-10 00:00 UT   11 33 55.9   -01 13 23     1.615    2.347  125.2   20.6   111   12.0 
2025-05-11 00:00 UT   11 34 01.7   -01 17 38     1.626    2.348  124.3   20.8   111   12.0 
2025-05-12 00:00 UT   11 34 09.2   -01 21 60     1.636    2.348  123.3   21.1   111   12.0 
2025-05-13 00:00 UT   11 34 18.3   -01 26 28     1.647    2.349  122.4   21.3   111   12.0 
2025-05-14 00:00 UT   11 34 29.1   -01 31 02     1.658    2.350  121.6   21.5   111   12.0 
2025-05-15 00:00 UT   11 34 41.4   -01 35 43     1.669    2.351  120.7   21.7   111   12.1 
2025-05-16 00:00 UT   11 34 55.3   -01 40 30     1.680    2.352  119.8   21.9   111   12.1 
2025-05-17 00:00 UT   11 35 10.8   -01 45 24     1.691    2.353  118.9   22.1   111   12.1 
2025-05-18 00:00 UT   11 35 27.9   -01 50 23     1.702    2.353  118.1   22.3   111   12.1 
2025-05-19 00:00 UT   11 35 46.4   -01 55 29     1.713    2.354  117.2   22.5   111   12.2 

    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.