(202) Chryseis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	29 Oct 2025	12.1	3.091 AU	2.115 AU	02h32m	+01°30'	167.2°	4.1°
Opposition	29 Oct 2025	12.1	3.091 AU	2.114 AU	02h31m	+01°27'	167.2°	4.1°

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 Chryseis are:

            e (Eccentricity)                : 0.1051399
            a (Semimajor axis)              : 3.0675907
            i (Inclination)                 : 8.85320
            Ω (Longitude of ascending node) : 136.70557
            ω (Argument of perihelion)      : 359.61281
            M (Mean anomaly)                : 275.98248
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 136.32299
            B (Latitude of perihelion)      : -0.05959
            P (Orbital period in years)     : 5.37            
        

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
2025-10-29 00:00 UT   02 32 13.3   +01 30 01     2.115    3.091  167.2    4.1   338   12.1 
2025-10-29 01:23 UT   02 32 10.6   +01 29 45     2.115    3.091  167.2    4.1   338   12.1 
2025-10-30 00:00 UT   02 31 26.9   +01 25 35     2.114    3.090  167.2    4.1   343   12.1 
2025-10-31 00:00 UT   02 30 40.4   +01 21 14     2.114    3.089  167.1    4.1   349   12.1 
2025-11-01 00:00 UT   02 29 53.9   +01 16 60     2.113    3.088  166.9    4.2   354   12.1 
2025-11-02 00:00 UT   02 29 07.3   +01 12 52     2.114    3.087  166.6    4.3   359   12.1 
2025-11-03 00:00 UT   02 28 20.7   +01 08 50     2.114    3.086  166.2    4.4     4   12.1 
2025-11-04 00:00 UT   02 27 34.1   +01 04 56     2.115    3.085  165.7    4.6     8   12.1 
2025-11-05 00:00 UT   02 26 47.7   +01 01 08     2.116    3.084  165.1    4.7    13   12.2 
2025-11-06 00:00 UT   02 26 01.4   +00 57 28     2.117    3.083  164.4    5.0    16   12.2 
2025-11-07 00:00 UT   02 25 15.4   +00 53 55     2.118    3.082  163.7    5.2    20   12.2 
2025-11-08 00:00 UT   02 24 29.5   +00 50 30     2.120    3.081  163.0    5.4    23   12.2 
2025-11-09 00:00 UT   02 23 44.0   +00 47 13     2.122    3.080  162.2    5.7    26   12.2 
2025-11-10 00:00 UT   02 22 58.8   +00 44 04     2.125    3.079  161.3    5.9    29   12.2 
2025-11-11 00:00 UT   02 22 14.0   +00 41 03     2.127    3.078  160.4    6.2    31   12.2 
2025-11-12 00:00 UT   02 21 29.7   +00 38 11     2.130    3.077  159.5    6.5    33   12.2 
2025-11-13 00:00 UT   02 20 45.8   +00 35 27     2.133    3.076  158.6    6.7    35   12.3 
2025-11-14 00:00 UT   02 20 02.5   +00 32 53     2.137    3.075  157.6    7.0    37   12.3 
2025-11-15 00:00 UT   02 19 19.7   +00 30 27     2.141    3.074  156.7    7.3    39   12.3 
2025-11-16 00:00 UT   02 18 37.5   +00 28 10     2.145    3.073  155.7    7.6    41   12.3 
2025-11-17 00:00 UT   02 17 56.0   +00 26 03     2.149    3.072  154.7    7.9    42   12.3 
2025-11-18 00:00 UT   02 17 15.3   +00 24 05     2.154    3.071  153.7    8.2    44   12.3 
2025-11-19 00:00 UT   02 16 35.2   +00 22 16     2.158    3.070  152.6    8.5    45   12.4 
2025-11-20 00:00 UT   02 15 55.9   +00 20 38     2.163    3.069  151.6    8.8    46   12.4 
2025-11-21 00:00 UT   02 15 17.5   +00 19 09     2.169    3.068  150.6    9.1    47   12.4 
2025-11-22 00:00 UT   02 14 39.9   +00 17 49     2.174    3.067  149.5    9.4    48   12.4 
2025-11-23 00:00 UT   02 14 03.3   +00 16 40     2.180    3.066  148.5    9.7    49   12.4 
2025-11-24 00:00 UT   02 13 27.5   +00 15 40     2.186    3.065  147.4   10.0    50   12.4 
2025-11-25 00:00 UT   02 12 52.8   +00 14 51     2.192    3.064  146.4   10.3    51   12.5 
2025-11-26 00:00 UT   02 12 19.0   +00 14 11     2.199    3.063  145.3   10.6    52   12.5 
2025-11-27 00:00 UT   02 11 46.3   +00 13 42     2.206    3.062  144.3   10.8    52   12.5 
2025-11-28 00:00 UT   02 11 14.6   +00 13 22     2.213    3.061  143.2   11.1    53   12.5 

    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.