644 Cosima

Modelled shape of Cosima from its lightcurve

Discovery
Discovered by| August Kopff
Discovery site| Heidelberg
Discovery date| 7 September 1907
Designations

MPC designation

| (644) Cosima

Alternative designations

| 1907 AA
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc| 107.84 yr (39390 d)
|{{{apsis}}}|helion}}| 3.0041 astronomical unit|AU (449.41 Gm)
|{{{apsis}}}|helion}}| 2.1938 AU (328.19 Gm)

Semi-major axis

| 2.5990 AU (388.80 Gm)
Eccentricity| 0.15589
Orbital period| 4.19 yr (1530.4 d)
Mean anomaly| 357.546°
Mean motion| 0° 14m 6.864s / day
Inclination| 1.0409°
Longitude of ascending node| 109.975°

|{{{apsis}}}|helion}}

| 268.690°
Physical characteristics
Mean radius| 9.96±0.75 km
Rotation period| 7.556 h (0.3148 d)
Geometric albedo| 0.1572±0.028
Absolute magnitude (H)| 11.13

644 Cosima is a minor planet orbiting the Sun.

## References

1. ↑ "644 Cosima (1907 AA)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=644;cad=1.

## External links

* 644 Cosima at AstDyS-2, Asteroids—Dynamic Site
* Ephemeris * Observation prediction * Orbital info * Proper elements * Observational info
* 644 Cosima at the JPL Small-Body Database
* Close approach * Discovery * Ephemeris * Orbit diagram * Orbital elements * Physical parameters

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