RDDM Index

Albedo Catena Cavus Chaos Chasma Collis Crater Dorsum Fluctus Fossa Labes Labyrinthus Lacus Lingula Macula Mare Mensa Mons Palus Patera Planitia Planum Regio Rupes Scopulus Serpens Sinus Sulcus Terra Tholus Unda Vallis Vastitas

List of dorsa

Dorsum (plural dorsa) is a word of Latin origin originally used to refer to the back of an animal, then used by the Romans to describe a mountain ridge. This term is used on the Moon or Mars for a wrinkle, a ridge or a generally elongated and raised structure - a ridge that can be sinuous. The star Theta Capricorni is also named like this.

Latitudes and longitudes in white are planetocentric. Those in orange use the older planetographic system.

Name	Entity	Type	Lat	Lon	Ø km	Quad	Origin
Aeolis Dorsa	Mars	Dorsum	-5.05	152.63	459.17	mc23	Classical albedo feature name.
Aesacus Dorsum	Mars	Dorsum	36.82	153.15	276.69	mc07	From albedo feature at 45°N, 205°W.
Aram Dorsum	Mars	Dorsum	7.80	348.76	83.31	mc11	Classical albedo feature name.
Arcadia Dorsa	Mars	Dorsum	55.90	222.44	1952.65	mc02	Named for classical albedo feature at 45°N, 120°W.
Arena Dorsum	Mars	Dorsum	12.71	68.94	372.03	mc13	Classical albedo feature name.
[Atrax Dorsum]	Mars	Dorsum	38.19	271.00	33.86	mc03	Classical town.
Auxo Dorsum	Mars	Dorsum	-55.72	318.24	82.05	mc26	One of the Graces.
Avernus Dorsa	Mars	Dorsum	-6.03	170.90	296.59	mc23	From albedo feature at 4°S, 190°W.
Cerberus Dorsa	Mars	Dorsum	-13.74	105.29	623.05	mc22	Classical albedo feature name.
Charis Dorsum	Mars	Dorsum	-55.86	318.53	251.00	mc26	One of the Graces.
Cleia Dorsum	Mars	Dorsum	-54.86	314.01	131.69	mc26	One of the Graces.
Dorsa Argentea	Mars	Dorsum	-77.63	326.61	339.26	mc30	Classical albedo feature name.
Dorsa Brevia	Mars	Dorsum	-71.05	63.18	650.99	mc30	Classical albedo feature name.
Eumenides Dorsum	Mars	Dorsum	4.79	203.60	569.26	mc08	Classical albedo feature name.
Felis Dorsa	Mars	Dorsum	-21.87	294.10	244.00	mc18	Classical albedo feature name.
Gordii Dorsum	Mars	Dorsum	4.11	215.86	481.56	mc08	Classical albedo feature name.
Hegemone Dorsum	Mars	Dorsum	-54.72	315.10	143.63	mc26	One of the Graces.
Hesperia Dorsa	Mars	Dorsum	-22.80	113.16	818.25	mc22	Albedo feature name.
Hyblaeus Dorsa	Mars	Dorsum	13.16	130.32	887.53	mc14	Named for albedo feature.
Iamuna Dorsa	Mars	Dorsum	20.97	309.60	38.18	mc10	From classical albedo feature Iamunae Sinus.
Isidis Dorsa	Mars	Dorsum	12.92	88.21	1074.70	mc13	Named for classical albedo feature at 25°N, 270°W.
Juventae Dorsa	Mars	Dorsum	0.39	288.98	481.41	mc10	From albedo feature at 4°S, 63°W.
Kepler Dorsum	Phobos	Dorsum	-45.00	356.00	15.00		Johannes; German astronomer (1571-1630).
Melas Dorsa	Mars	Dorsum	-18.92	287.90	486.81	mc18	Classical albedo feature name.
Nilus Dorsa	Mars	Dorsum	20.68	280.94	292.90	mc10	Named for albedo feature at 20°N, 65°W.
Pasithea Dorsum	Mars	Dorsum	-55.14	318.42	282.20	mc26	One of the Graces.
Phaenna Dorsum	Mars	Dorsum	-53.79	316.71	164.16	mc26	One of the Graces.
Phlegra Dorsa	Mars	Dorsum	25.08	170.37	2818.61	mc15	Named for classical albedo feature at 35°N, 195°W.
[Pityusa Dorsa]	Mars	Dorsum	-64.24	29.50	397.00	mc27	From albedo feature; name changed to Pityusa Rupes.
Sacra Dorsa	Mars	Dorsum	11.21	293.91	1416.00	mc10	From albedo feature at 20°N, 67°W.
Sinai Dorsa	Mars	Dorsum	-12.77	281.08	456.54	mc18	Classical albedo feature name.
Solis Dorsa	Mars	Dorsum	-22.88	280.26	779.50	mc18	Classical albedo feature name.
Styx Dorsum	Mars	Dorsum	30.81	151.86	90.67	mc07	Albedo feature name.
Tyrrhena Dorsa	Mars	Dorsum	-24.20	115.72	779.40	mc22	Albedo feature name.
Uranius Dorsum	Mars	Dorsum	23.79	284.96	542.08	mc10	Named for albedo feature.
Xanthe Dorsa	Mars	Dorsum	35.90	325.96	0.00	mc04	Classical albedo feature name.
Zea Dorsa	Mars	Dorsum	-48.87	80.54	249.02	mc28	Classical albedo feature name.

F - Index by entity

List of fluctūs

Fluctus (plural fluctūs) is a word of Latin origin denoting a wave, flood, flow, land covered by a lava or cryolave flow. It was first used to describe volcanic formations on the Jovian satellite Io, such as Marduk Fluctus. About fifty are known on Venus but only
three on Mars.

Name	Entity	Type	Lat	Lon	Ø km	Quad	Origin
Galaxias Fluctūs	Mars	Fluctus	30.96	143.03	607.03	mc07	Albedo feature name.
Tantalus Fluctus	Mars	Fluctus	35.93	264.32	794.34	mc03	Albedo feature name.
Zephyria Fluctus	Mars	Fluctus	0.72	155.53	42.00	mc15	Classical albedo feature name.

F - Index by entity

List of fossae

Fossa (plural fossae) is a word of Latin origin designating a ditch, a trench or a channel. It is used on Mars as well as on Venus to describe a long linear depression or a long, narrow and shallow valley. One can meet isolated ditches (like Aganippe Fossa west of Arsia Mons) or on the contrary assembled in large groups (like Tantalus Fossae near Alba Patera).

The [names in grey and italics] in the tables are dropped or moved, referenced here because they may appear in older documents. Latitudes and longitudes in white are planetocentric. Those in orange use the older planetographic system.

Name	Entity	Type	Lat	Lon	Ø km	Quad	Origin
Acheron Fossae	Mars	Fossa	38.27	224.98	703.11	mc02	From classical albedo feature at 35°N, 140°W.
Aganippe Fossa	Mars	Fossa	-8.49	234.00	537.16	mc17	Classical albedo feature name.
Alba Fossae	Mars	Fossa	49.39	253.18	2072.02	mc03	Classical albedo name.
Albor Fossae	Mars	Fossa	18.09	150.78	155.00	mc15	From albedo feature at 20°N, 205°W.
Amenthes Fossae	Mars	Fossa	9.07	102.68	850.00	mc14	Classical albedo feature name.
Atrax Fossa	Mars	Fossa	38.19	271.02	34.42	mc03	Classical town.
Calydon Fossa	Mars	Fossa	-7.43	272.02	351.25	mc18	The son of Ares and Astynome.
Ceraunius Fossae	Mars	Fossa	27.00	249.85	1166.63	mc09	Classical albedo feature name
Cerberus Fossae	Mars	Fossa	11.28	166.37	1235.00	mc15	From albedo feature at 10°N, 212°W. Changed from Cerberus Rupes.
Chalce Fossa	Mars	Fossa	-51.67	320.41	33.97	mc26	Albedo name.
Claritas Fossae	Mars	Fossa	-27.89	255.76	2030.64	mc17	Classical albedo feature name.
Coloe Fossae	Mars	Fossa	36.65	56.78	575.89	mc05	Classical albedo feature name.
Coracis Fossae	Mars	Fossa	-35.82	279.14	748.96	mc25	From albedo feature at 46°S, 87°W.
Cyane Fossae	Mars	Fossa	31.25	238.83	913.17	mc02	Classical albedo feature name.
Echus Fossae	Mars	Fossa	2.61	283.25	421.03	mc10	Classical albedo feature name.
Elysium Fossae	Mars	Fossa	24.08	146.14	1044.00	mc15	Classical albedo feature name.
Erythraea Fossa	Mars	Fossa	-27.27	329.06	155.19	mc19	Classical albedo feature name.
Fortuna Fossae	Mars	Fossa	4.64	267.31	324.28	mc09	Classical albedo feature name.
Galaxias Fossae	Mars	Fossa	36.63	142.00	552.00	mc07	Albedo feature name.
Gigas Fossae	Mars	Fossa	3.55	230.44	190.00	mc09	Albedo feature name.
Gordii Fossae	Mars	Fossa	14.83	232.40	369.00	mc09	From classical albedo feature name.
Halex Fossae	Mars	Fossa	27.35	233.96	147.25	mc09	From albedo feature at 40°N, 110°W.
Hephaestus Fossae	Mars	Fossa	20.84	122.85	633.32	mc14	Classical albedo feature name.
Hyblaeus Fossae	Mars	Fossa	21.44	137.06	375.00	mc15	Albedo feature name.
Icaria Fossae	Mars	Fossa	-48.09	234.84	2115.45	mc24	From albedo feature at 44°S, 130°W.
Idaeus Fossae	Mars	Fossa	37.33	308.80	202.01	mc04	Classical albedo feature name.
Ismeniae Fossae	Mars	Fossa	41.31	38.35	286.91	mc05	From albedo feature at 40°N, 333°W.
Jovis Fossae	Mars	Fossa	19.77	244.17	348.63	mc09	From albedo feature at 16°N, 111°W.
Labeatis Fossae	Mars	Fossa	24.58	275.47	1496.36	mc10	Previously named feature at 30°N, 75°W; expanded coordinates.
[Labeatis Fossae]	Mars	Fossa	20.68	265.00	616.00	mc09	Previously named feature at 30°N, 75°W; expanded coordinates. Name dropped because in the database twice.
Mangala Fossa	Mars	Fossa	-17.27	214.12	695.00	mc16	Named for nearby valles.
Mareotis Fossae	Mars	Fossa	44.34	283.88	1907.94	mc03	From albedo feature at 32°N, 96°W.
Medusae Fossae	Mars	Fossa	-2.17	195.80	278.52	mc16	Classical albedo feature name.
Melas Fossae	Mars	Fossa	-26.28	288.48	568.18	mc18	Classical albedo feature name.
Memnonia Fossae	Mars	Fossa	-23.63	206.18	1585.28	mc16	Classical albedo feature name.
Nectaris Fossae	Mars	Fossa	-23.09	302.84	623.07	mc18	Classical albedo feature name.
Nia Fossae	Mars	Fossa	-14.73	288.23	379.56	mc18	Classical albedo feature name.
Nili Fossae	Mars	Fossa	22.02	76.69	727.91	mc13	Classical albedo feature name.
Nilokeras Fossa	Mars	Fossa	24.59	302.17	267.00	mc10	Classical albedo feature name.
Noctis Fossae	Mars	Fossa	-2.69	261.15	712.73	mc17	Classical albedo feature at 10°S, 96°W.
Oceanidum Fossa	Mars	Fossa	-61.58	330.49	167.16	mc26	Classical albedo feature name.
Olympica Fossae	Mars	Fossa	24.85	246.08	420.00	mc09	From albedo feature at 17°N, 134°W.
Oti Fossae	Mars	Fossa	-9.63	242.91	373.59	mc17	Classical albedo feature.
Pavonis Fossae	Mars	Fossa	4.15	248.71	156.08	mc09	Albedo name.
Pyramus Fossae	Mars	Fossa	50.39	66.31	298.18	mc06	From albedo feature at 65°N, 300°W.
Pyrrhae Fossae	Mars	Fossa	-29.20	336.20	430.00	mc19	Classical martian albedo feature, Pyrrhae.
Sacra Fossae	Mars	Fossa	20.36	290.00	950.00	mc10	Classical albedo feature name.
Sinai Fossae	Mars	Fossa	-14.08	281.33	589.15	mc18	Classical albedo feature name.
Sirenum Fossae	Mars	Fossa	-35.57	197.26	2731.21	mc24	Classical albedo feature name.
Stygis Fossae	Mars	Fossa	26.92	149.83	385.00	mc15	Albedo feature name.
Tanais Fossae	Mars	Fossa	38.74	273.51	172.95	mc03	Classical albedo name.
Tantalus Fossae	Mars	Fossa	49.83	263.91	2361.86	mc03	From albedo feature at 35°N, 110°W.
Tempe Fossae	Mars	Fossa	40.42	288.60	2116.24	mc03	From albedo feature at 40°N, 70°W.
Thaumasia Fossae	Mars	Fossa	-47.75	268.95	996.18	mc25	Classical albedo feature name.
[Tithoniae Fossae]	Mars	Fossa	-6.33	277.50	492.00	mc18	Classical albedo feature name. Name dropped because in the database twice.
Tithoniae Fossae	Mars	Fossa	-4.32	276.96	838.00	mc18	Classical albedo name.
Tractus Fossae	Mars	Fossa	25.89	258.72	403.06	mc09	Classical albedo feature name.
Tyrrhena Fossae	Mars	Fossa	-22.23	105.80	305.55	mc22	Classical albedo name.
Ulysses Fossae	Mars	Fossa	9.95	236.93	849.94	mc09	From albedo feature name.
Uranius Fossae	Mars	Fossa	25.29	269.87	394.11	mc09	Classical albedo feature name.
Zephyrus Fossae	Mars	Fossa	23.93	144.19	306.19	mc15	Albedo feature name.

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