Talk:3181: Jumping Frog Radius - Revision history

Sci09273.15: equation

2026-01-30T14:25:24Z

equation

206.47.13.28 at 00:30, 23 December 2025

2025-12-23T00:30:21Z

92.23.2.208: Seems I edited the tildes out when refining the message.

2025-12-19T22:39:01Z

Seems I edited the tildes out when refining the message.

92.23.2.208 at 22:11, 19 December 2025

2025-12-19T22:11:44Z

SDSpivey at 05:10, 19 December 2025

2025-12-19T05:10:59Z

BunsenH at 15:49, 18 December 2025

2025-12-18T15:49:29Z

BunsenH at 15:26, 18 December 2025

2025-12-18T15:26:34Z

Pere prlpz: ::I came here for the same reason. Scape velocities in the table are definitively wrong. Escape velocity for Eris is given in Wikipedia as 1.38 ± 0.01 km/s, about three orders of magnitude over the number listed in the table. ::Having such a table is

2025-12-18T10:31:41Z

::I came here for the same reason. Scape velocities in the table are definitively wrong. Escape velocity for Eris is given in Wikipedia as 1.38 ± 0.01 km/s, about three orders of magnitude over the number listed in the table. ::Having such a table is

2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3: correction to previous comment

2025-12-18T08:34:56Z

correction to previous comment

2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3: some numbers for the table

2025-12-18T08:33:18Z

some numbers for the table

← Older revision		Revision as of 14:25, 30 January 2026
Line 54:		Line 54:
	:Ladies and gentleamphibia... have we all forgotten the {{w\|Orbiting Frog Otolith}}...? [[Special:Contributions/92.23.2.208\|92.23.2.208]] 22:11, 19 December 2025 (UTC)		:Ladies and gentleamphibia... have we all forgotten the {{w\|Orbiting Frog Otolith}}...? [[Special:Contributions/92.23.2.208\|92.23.2.208]] 22:11, 19 December 2025 (UTC)
	::Unfortunately, Orbiting Frog Otolith never managed to reach the ''r''<sub>jf</sub> distance for Earth. --[[Special:Contributions/206.47.13.28\|206.47.13.28]] 00:30, 23 December 2025 (UTC)		::Unfortunately, Orbiting Frog Otolith never managed to reach the ''r''<sub>jf</sub> distance for Earth. --[[Special:Contributions/206.47.13.28\|206.47.13.28]] 00:30, 23 December 2025 (UTC)
		+
		+	R_v = (2GM)/(v^2) <--- general equation for finding the radius where inside of that radius an object of a given velocity cannot escape due to the strength of the gravitational pull pulling on it. [[User:Sci09273.15\|Sci09273.15]] ([[User talk:Sci09273.15\|talk]]) 14:25, 30 January 2026 (UTC)

← Older revision		Revision as of 00:30, 23 December 2025
Line 53:		Line 53:
	I have looked, but I cannot find out the result of an experiment that had frogs on the ISS a few years ago. Therefore "all the frogs" are not necessarily on the Earth's surface. [[User:SDSpivey\|SDSpivey]] ([[User talk:SDSpivey\|talk]]) 05:10, 19 December 2025 (UTC)		I have looked, but I cannot find out the result of an experiment that had frogs on the ISS a few years ago. Therefore "all the frogs" are not necessarily on the Earth's surface. [[User:SDSpivey\|SDSpivey]] ([[User talk:SDSpivey\|talk]]) 05:10, 19 December 2025 (UTC)
	:Ladies and gentleamphibia... have we all forgotten the {{w\|Orbiting Frog Otolith}}...? [[Special:Contributions/92.23.2.208\|92.23.2.208]] 22:11, 19 December 2025 (UTC)		:Ladies and gentleamphibia... have we all forgotten the {{w\|Orbiting Frog Otolith}}...? [[Special:Contributions/92.23.2.208\|92.23.2.208]] 22:11, 19 December 2025 (UTC)
		+	::Unfortunately, Orbiting Frog Otolith never managed to reach the ''r''<sub>jf</sub> distance for Earth. --[[Special:Contributions/206.47.13.28\|206.47.13.28]] 00:30, 23 December 2025 (UTC)

← Older revision		Revision as of 22:39, 19 December 2025
Line 52:		Line 52:

	I have looked, but I cannot find out the result of an experiment that had frogs on the ISS a few years ago. Therefore "all the frogs" are not necessarily on the Earth's surface. [[User:SDSpivey\|SDSpivey]] ([[User talk:SDSpivey\|talk]]) 05:10, 19 December 2025 (UTC)		I have looked, but I cannot find out the result of an experiment that had frogs on the ISS a few years ago. Therefore "all the frogs" are not necessarily on the Earth's surface. [[User:SDSpivey\|SDSpivey]] ([[User talk:SDSpivey\|talk]]) 05:10, 19 December 2025 (UTC)
−	:Ladies and gentleamphibia... have we all forgotten the {{w\|Orbiting Frog Otolith}}...?	+	:Ladies and gentleamphibia... have we all forgotten the {{w\|Orbiting Frog Otolith}}...? [[Special:Contributions/92.23.2.208\|92.23.2.208]] 22:11, 19 December 2025 (UTC)

← Older revision		Revision as of 22:11, 19 December 2025
Line 52:		Line 52:

	I have looked, but I cannot find out the result of an experiment that had frogs on the ISS a few years ago. Therefore "all the frogs" are not necessarily on the Earth's surface. [[User:SDSpivey\|SDSpivey]] ([[User talk:SDSpivey\|talk]]) 05:10, 19 December 2025 (UTC)		I have looked, but I cannot find out the result of an experiment that had frogs on the ISS a few years ago. Therefore "all the frogs" are not necessarily on the Earth's surface. [[User:SDSpivey\|SDSpivey]] ([[User talk:SDSpivey\|talk]]) 05:10, 19 December 2025 (UTC)
		+	:Ladies and gentleamphibia... have we all forgotten the {{w\|Orbiting Frog Otolith}}...?

← Older revision		Revision as of 05:10, 19 December 2025
Line 50:		Line 50:
	::Having such a table is a great idea but we need to correct the maths and add some smaller bodies. Probably some comets will be larger than their jumping frog radius.--[[User:Pere prlpz\|Pere prlpz]] ([[User talk:Pere prlpz\|talk]]) 10:31, 18 December 2025 (UTC)		::Having such a table is a great idea but we need to correct the maths and add some smaller bodies. Probably some comets will be larger than their jumping frog radius.--[[User:Pere prlpz\|Pere prlpz]] ([[User talk:Pere prlpz\|talk]]) 10:31, 18 December 2025 (UTC)
	:::I replaced the current list items with Deimos and Halley's Comet. In general, an object small enough for a frog to jump away will also be minor enough to be unfamiliar to readers unless the object is pretty close to us. EDIT: Jupiter's named Trojan asteroids are all too large. Earth's two known Trojan asteroids don't have known masses, so their escape velocities can't be calculated unless their densities are assumed. [[User:BunsenH\|BunsenH]] ([[User talk:BunsenH\|talk]]) 15:26, 18 December 2025 (UTC)		:::I replaced the current list items with Deimos and Halley's Comet. In general, an object small enough for a frog to jump away will also be minor enough to be unfamiliar to readers unless the object is pretty close to us. EDIT: Jupiter's named Trojan asteroids are all too large. Earth's two known Trojan asteroids don't have known masses, so their escape velocities can't be calculated unless their densities are assumed. [[User:BunsenH\|BunsenH]] ([[User talk:BunsenH\|talk]]) 15:26, 18 December 2025 (UTC)
		+
		+	I have looked, but I cannot find out the result of an experiment that had frogs on the ISS a few years ago. Therefore "all the frogs" are not necessarily on the Earth's surface. [[User:SDSpivey\|SDSpivey]] ([[User talk:SDSpivey\|talk]]) 05:10, 19 December 2025 (UTC)

@@ Line 49: / Line 49: @@
 ::I came here for the same reason. Scape velocities in the table are definitively wrong. Escape velocity for Eris is given in Wikipedia as 1.38 ± 0.01 km/s, about three orders of magnitude over the number listed in the table.
 ::Having such a table is a great idea but we need to correct the maths and add some smaller bodies. Probably some comets will be larger than their jumping frog radius.--[[User:Pere prlpz|Pere prlpz]] ([[User talk:Pere prlpz|talk]]) 10:31, 18 December 2025 (UTC)
-:::I replaced the current list items with Deimos and Halley's Comet. In general, an object small enough for a frog to jump away will also be minor enough to be unfamiliar to readers unless the object is pretty close to us. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 15:26, 18 December 2025 (UTC)
+:::I replaced the current list items with Deimos and Halley's Comet. In general, an object small enough for a frog to jump away will also be minor enough to be unfamiliar to readers unless the object is pretty close to us. EDIT: Jupiter's named Trojan asteroids are all too large.  Earth's two known Trojan asteroids don't have known masses, so their escape velocities can't be calculated unless their densities are assumed. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 15:26, 18 December 2025 (UTC)

← Older revision		Revision as of 15:26, 18 December 2025
Line 49:		Line 49:
	::I came here for the same reason. Scape velocities in the table are definitively wrong. Escape velocity for Eris is given in Wikipedia as 1.38 ± 0.01 km/s, about three orders of magnitude over the number listed in the table.		::I came here for the same reason. Scape velocities in the table are definitively wrong. Escape velocity for Eris is given in Wikipedia as 1.38 ± 0.01 km/s, about three orders of magnitude over the number listed in the table.
	::Having such a table is a great idea but we need to correct the maths and add some smaller bodies. Probably some comets will be larger than their jumping frog radius.--[[User:Pere prlpz\|Pere prlpz]] ([[User talk:Pere prlpz\|talk]]) 10:31, 18 December 2025 (UTC)		::Having such a table is a great idea but we need to correct the maths and add some smaller bodies. Probably some comets will be larger than their jumping frog radius.--[[User:Pere prlpz\|Pere prlpz]] ([[User talk:Pere prlpz\|talk]]) 10:31, 18 December 2025 (UTC)
		+	:::I replaced the current list items with Deimos and Halley's Comet. In general, an object small enough for a frog to jump away will also be minor enough to be unfamiliar to readers unless the object is pretty close to us. [[User:BunsenH\|BunsenH]] ([[User talk:BunsenH\|talk]]) 15:26, 18 December 2025 (UTC)

← Older revision		Revision as of 10:31, 18 December 2025
Line 47:		Line 47:
	:I was wondering about that myself, but you got here a few minutes before I did. [[User:BunsenH\|BunsenH]] ([[User talk:BunsenH\|talk]]) 23:54, 17 December 2025 (UTC)		:I was wondering about that myself, but you got here a few minutes before I did. [[User:BunsenH\|BunsenH]] ([[User talk:BunsenH\|talk]]) 23:54, 17 December 2025 (UTC)
	:I can't even hazard a guess as to where those numbers could possibly come from, besides hallucination. Sedna's mass isn't known (since it has no known moons, it can't be calculated) but it is significantly smaller than the others (c. 500km radius compared to 715 (Makemake) 790 (Haumea) or 1163 (Eris)), and the ones that are known have rjf radii, in light seconds, of 55 (Makemake), 86 (Haumea) and 365 (Eris). Their semi-major axes are (respectively) 45, 43 and 68 AU. There is therefore no sort of calculation that I can find, using any of those numbers, or their square roots or whatever, that give anything like the numbers in the table... [[Special:Contributions/2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3\|2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3]] 08:33, 18 December 2025 (UTC)		:I can't even hazard a guess as to where those numbers could possibly come from, besides hallucination. Sedna's mass isn't known (since it has no known moons, it can't be calculated) but it is significantly smaller than the others (c. 500km radius compared to 715 (Makemake) 790 (Haumea) or 1163 (Eris)), and the ones that are known have rjf radii, in light seconds, of 55 (Makemake), 86 (Haumea) and 365 (Eris). Their semi-major axes are (respectively) 45, 43 and 68 AU. There is therefore no sort of calculation that I can find, using any of those numbers, or their square roots or whatever, that give anything like the numbers in the table... [[Special:Contributions/2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3\|2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3]] 08:33, 18 December 2025 (UTC)
		+	::I came here for the same reason. Scape velocities in the table are definitively wrong. Escape velocity for Eris is given in Wikipedia as 1.38 ± 0.01 km/s, about three orders of magnitude over the number listed in the table.
		+	::Having such a table is a great idea but we need to correct the maths and add some smaller bodies. Probably some comets will be larger than their jumping frog radius.--[[User:Pere prlpz\|Pere prlpz]] ([[User talk:Pere prlpz\|talk]]) 10:31, 18 December 2025 (UTC)

@@ Line 46: / Line 46: @@
 Are the escape velocity figures in that table...even remotely accurate? For instance, the table claims Eris's escape velocity is 4.43 meters per second, while Wikipedia says 1.38 ''kilometers'' per second. (Also that Eris is ~4.43 orders of magnitude brighter than its moon, Dysnomia, in infrared. Hopefully that's unrelated.) [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 23:46, 17 December 2025 (UTC)
 :I was wondering about that myself, but you got here a few minutes before I did. [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 23:54, 17 December 2025 (UTC)
-:I can't even hazard a guess as to where those numbers could possibly come from, besides hallucination. Sedna's mass isn't known (since it has no known moons, it can't be calculated) but it is significantly smaller than the others (c. 500km radius compared to 715 (Makemake) 790 (Haumea) or 1163 (Eris)), and the ones that are known have rjf radii, in light seconds, of 55 (Makemake), 86 (Haumea) and 365 (Eris). Their semi-major axes are (respectively) 45, 43 and 68 AU. There is therefore no sort of calculation using any of those numbers, or their square roots or whatever, that give anything like the numbers in the table... [[Special:Contributions/2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3|2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3]] 08:33, 18 December 2025 (UTC)
+:I can't even hazard a guess as to where those numbers could possibly come from, besides hallucination. Sedna's mass isn't known (since it has no known moons, it can't be calculated) but it is significantly smaller than the others (c. 500km radius compared to 715 (Makemake) 790 (Haumea) or 1163 (Eris)), and the ones that are known have rjf radii, in light seconds, of 55 (Makemake), 86 (Haumea) and 365 (Eris). Their semi-major axes are (respectively) 45, 43 and 68 AU. There is therefore no sort of calculation that I can find, using any of those numbers, or their square roots or whatever, that give anything like the numbers in the table... [[Special:Contributions/2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3|2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3]] 08:33, 18 December 2025 (UTC)

← Older revision		Revision as of 08:33, 18 December 2025
Line 46:		Line 46:
	Are the escape velocity figures in that table...even remotely accurate? For instance, the table claims Eris's escape velocity is 4.43 meters per second, while Wikipedia says 1.38 ''kilometers'' per second. (Also that Eris is ~4.43 orders of magnitude brighter than its moon, Dysnomia, in infrared. Hopefully that's unrelated.) [[User:GreatWyrmGold\|GreatWyrmGold]] ([[User talk:GreatWyrmGold\|talk]]) 23:46, 17 December 2025 (UTC)		Are the escape velocity figures in that table...even remotely accurate? For instance, the table claims Eris's escape velocity is 4.43 meters per second, while Wikipedia says 1.38 ''kilometers'' per second. (Also that Eris is ~4.43 orders of magnitude brighter than its moon, Dysnomia, in infrared. Hopefully that's unrelated.) [[User:GreatWyrmGold\|GreatWyrmGold]] ([[User talk:GreatWyrmGold\|talk]]) 23:46, 17 December 2025 (UTC)
	:I was wondering about that myself, but you got here a few minutes before I did. [[User:BunsenH\|BunsenH]] ([[User talk:BunsenH\|talk]]) 23:54, 17 December 2025 (UTC)		:I was wondering about that myself, but you got here a few minutes before I did. [[User:BunsenH\|BunsenH]] ([[User talk:BunsenH\|talk]]) 23:54, 17 December 2025 (UTC)
		+	:I can't even hazard a guess as to where those numbers could possibly come from, besides hallucination. Sedna's mass isn't known (since it has no known moons, it can't be calculated) but it is significantly smaller than the others (c. 500km radius compared to 715 (Makemake) 790 (Haumea) or 1163 (Eris)), and the ones that are known have rjf radii, in light seconds, of 55 (Makemake), 86 (Haumea) and 365 (Eris). Their semi-major axes are (respectively) 45, 43 and 68 AU. There is therefore no sort of calculation using any of those numbers, or their square roots or whatever, that give anything like the numbers in the table... [[Special:Contributions/2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3\|2A01:CB08:E6:7000:D0A9:46FC:30BB:E6E3]] 08:33, 18 December 2025 (UTC)