Asteroids with Satellites Database--Johnston's Archive
(69230)
Hermes
compiled by Wm. Robert Johnston
last updated
20 September 2014
--Orbital and physical data--
(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:
NEA, Apollo
(PHA)
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
1.655109415 AU
| |
orbital period P: |
2.129355952 yr
(= 777.7472616 d)
| |
eccentricity e: |
0.624135010
| |
perihelion distance q: |
0.622097684 AU
| |
aphelion distance Q: |
2.688121147 AU
| |
inclination i: |
6.0682380°
| |
argument of perihelion ω: |
92.7131629°
| |
ascending node Ω: |
34.2429732°
| |
mean anomaly M: |
320.3225723°
| |
perihelion passage TP: |
2014 Aug 16.719474
| |
Epoch: |
2014 May 23
| |
data arc: |
1937-2011
(827 obs.)
| |
Earth MOID: |
0.00428968 AU
| |
Jupiter Tisserand invariant TJ: |
4.02
|
orbital data, secondary:
|
binary dynamical type: | B [P07f] | |
semimajor axis as: |
1.1
km
[*E]
| |
separation/primary radius as/rp: | 3.7 [*E] | |
separation/Hill radius as/rH: | 0.032 [*E] | |
orbital period Ps: |
0.5789
± 0.00017
d [P06b]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
1.22
[P07f]
|
|
other data, system (combined):
|
absolute mag. H: |
17.5
[MPC]
17.55 ± 0.1 [P03a]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
0.81
km [*D]
| |
geometric albedo: |
0.25
± 0.12
[P06b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
35 km [*E]
|
other data, primary:
|
diameter dp: |
0.6
± 0.12
km [P06b]
| |
rotation period RPp: |
13.894
± 0.004
h [P06b]
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.54
± 0.12
km [*D]
| |
diameter ratio ds/dp: |
0.9
± 0.09
[P06b]
| |
component mag. difference ΔM: |
0.23
± 0.22
[*D]
| |
rotation period RPs: |
13.892
± 0.006
h [P03a]
| |
|
|
--
(69230) Hermes
--discovery and notes:
Primary discovered
1937 Oct 28
from
Heidelberg, Germany
by
K. Reinmuth.
Alternate designation(s):
1937 UB
.
Linked to prediscovery observations from 1937 Oct 25.
Permanent number assigned 2003 Nov 09.
Named 1938 Jan for the mythological Greek messenger of the gods [MPC50255].
Companion discovered
2003 Oct 18
by J. L. Margot, M. C. Nolan, V. Negron, A. A. Hine, D. B. Campbell, E. S. Howell, L. A. M. Benner, S. J. Ostro, and J. D. Giorgini
using
radar
observations from Arecibo Observatory, Puerto Rico.
Announced
2003 Oct 20 [M03i].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Taylor, Patrick A. & Margot, Jean-Luc 2014, Icarus Tidal end states of binary asteroid systems with a nonspherical component
- Busch, M., Jacobson, S. A., Benner, L., Brozovic, M., Howell, E. S., Margot, J., Naidu, S., Shepard, M. K., & Taylor, P. A. 2013, AGU Fall Meeting Abstracts A Lower Size Limit for Near-Earth Asteroid Satellites
- Rivkin, A. S., Binzel, R. P., Sunshine, J., Bus, S. J., Burbine, T. H., & Saxena, A. 2004, Icarus Infrared spectroscopic observations of 69230 Hermes (1937 UB): possible unweathered endmember among ordinary chondrite analogs
- Jopek, T. J., Valsecchi, G. B., & Froeschlé, Cl. 2004, Earth Moon and Planets Possible meteoroid streams associated with (69230) Hermes and 2002 SY<SUB>50</SUB>
- Povenmire, H. 2004, Lunar and Planetary Institute Conference Abstracts Hermes, Asteroid 2002 SY50 and the Northern Cetids — No Link Found!
- Hollis, A. J. 2004, Journal of the British Astronomical Association Minor planet Hermes recovered
- Pravec, P., Kusnirak, P., Warner, B., Behrend, R., Harris, A. W., Oksanen, A., Higgins, D., Roy, R., Rinner, C., Demeautis, C., van den Abbeel, F., Klotz, A., Waelchli, N., Alderweireldt, T., Cotrez, V., & Brunetto, L. 2003, International Astronomical Union Circular 1937 UB (Hermes)
- Margot, J. L., Nolan, M. C., Negron, V., Hine, A. A., Campbell, D. B., Howell, E. S., Benner, L. A. M., Ostro, S. J., Giorgini, J. D., & Marsden, B. G. 2003, International Astronomical Union Circular 1937 UB (Hermes)
- Rivkin, A. S. & Binzel, R. P. 2003, International Astronomical Union Circular 1937 UB (Hermes)
- Skiff, B. A., Young, J., & Spahr, T. 2003, International Astronomical Union Circular 1937 UB (Hermes)
- Murdin, P. 2000, Encyclopedia of Astronomy and Astrophysics Hermes
- Olsson-Steel, Duncan 1988, Icarus Identification of meteoroid streams from Apollo asteroids in the Adelaide Radar Orbit surveys
- Kaster, Katherine P. 1938, Publications of the Astronomical Society of the Pacific Orbit Determination of Hermes (1937 UB) Based on Distances Derived from Parallax Methods
- Beard, D. M. 1938, Publications of the Astronomical Society of the Pacific A New Method of Determining the Distance in Case of Great Circle Motion Close to the Earth, with Application to the Reinmuth Object, 1937 UB, Hermes (Abstract)
- Kaster, Katherine P. 1938, Publications of the Astronomical Society of the Pacific Orbit Determination of Hermes (1937 UB) Based on Distances Derived from Parallax Methods (Abstract)
- Jeffers, H. M. 1938, Publications of the Astronomical Society of the Pacific Reinmuth Object, 1937 UB
- Mohorovičić, Stjepan 1938, Astronomische Nachrichten Der Durchmesser des Objektes Reinmuth 1937 UB Hermes
- Stobbe, J. 1938, Astronomische Nachrichten Bemerkungen über Helligkeit und Durchmesser von Hermes (1937 UB)
- 1938, Nature The Reinmuth Earth-grazing Planet, 1937 UB
- Kobold, Hermann Albert 1938, Astronomische Nachrichten Planet Hermes (1937 UB)
- 1938, Astronomische Nachrichten Rechen-Institut: Planet 1937 UB
- Stobbe, Joachim 1938, Veroeffentlichungen der Universitaets-Sternwarte Kiel Bemerkungen uber Helligkeit und Durchmesser von Hermes (1937 UB) / J. Stobbe
- Gondolatsch, F. 1938, Die Sterne Die Begegnung des Kleinen Planeten 1937 UB (Objekt Reinmuth) MIT der Erde
- de Terwangne, R. & de Roy, Felix 1937, Gazette Astronomique Notes
- 1937, Astronomische Nachrichten Reinmuthsches Objekt 1937 UB
- Gondolatsch, F. 1937, Astronomische Nachrichten Neue Elemente des Objektes Reinmuth 1937 UB
- Gondolatsch, F. 1937, Astronomische Nachrichten Objekt Reinmuth 1937 UB
- Gondolatsch, F. 1937, Astronomische Nachrichten Elemente des Planeten 1937 UB Hermes
- Kobold, H. A. & Schewick 1937, International Astronomical Union Circular Object Reinmuth
©
2003-2005, 2014
by Wm. Robert Johnston.
Last modified
20 September 2014.
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