603 Timandra

603 TimandraDiscovery

Discovered by| Joel Hastings Metcalf
Discovery site| Taunton, Massachusetts
Discovery date| 16 February 1906
Designations

MPC designation

| (603) Timandra
Pronunciation| /tɪˈmændrə/[1]

Alternative designations

| 1906 TJ
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc| 110.08 yr (40205 d)
|{{{apsis}}}|helion}}| 2.9809 astronomical unit|AU (445.94 Gm)
|{{{apsis}}}|helion}}| 2.0947 AU (313.36 Gm)

Semi-major axis

| 2.5378 AU (379.65 Gm)
Eccentricity| 0.17460
Orbital period| 4.04 yr (1476.7 d)
Mean anomaly| 87.1291°
Mean motion| 0° 14m 37.644s / day
Inclination| 8.0265°
Longitude of ascending node| 343.455°

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

| 159.764°
Physical characteristics
Mean radius| 6.865±0.45 km
Rotation period| 41.79 h (1.741 d)[2][3]
Geometric albedo| 0.1354±0.019
Absolute magnitude (H)| 11.8

Timandra (minor planet designation: 603 Timandra) is a minor planet orbiting the Sun that was discovered by American astronomer Joel Hastings Metcalf on February 16, 1906, in Taunton, Massachusetts.

Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico, during 2010 gave a light curve with a long rotation period of 41.79 ± 0.02 hours and a brightness variation of 0.10 ± 0.02 in magnitude.[3]

## References

1. ↑ Noah Webster (1884) A Practical Dictionary of the English Language
2. ↑ 2.0 2.1 Yeomans, Donald K., "603 Timandra", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=603, retrieved 5 May 2016.
3. ↑ 3.0 3.1 Pilcher, Frederick (April 2011), "Rotation Period Determinations for 25 Phocaea, 140 Siwa, 149 Medusa 186 Celuta, 475 Ocllo, 574 Reginhild, and 603 Timandra", The Minor Planet Bulletin 38 (2): pp. 76–78, Bibcode: 2011MPBu...38...76P.

## External links

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

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