Talk:Mars Orbiter Mission

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Policy compliant?[edit]

Please can someone explain to me how this article avoids the pitfalls noted at WP:NOTNEWSPAPER and WP:CRYSTAL. - Sitush (talk) 07:32, 21 August 2012 (UTC)

It certainly gives that impression without stating the name of the satellite. BatteryIncluded (talk) 15:28, 21 August 2012 (UTC)

Mangalyaan meaning[edit]

Mangal means Mars in both Sanskrit and Hindi languages while yaan means craft, So Mangalyaan translates to Mars Craft and not "auspicious vehicle to Mars" as has presented in the first para. This mistake needs to be corrected now before foreign newspapers who may not understand the language may repeat it in their publications. WBRSin (talk) 08:58, 11 September 2012 (UTC)

Yes check.svg Done -Thank you for the correct translation. BatteryIncluded (talk) 16:50, 19 September 2012 (UTC)

Change of name?![edit]

ISRO doesn't refer to the probe as Mangalyaan in any of their press releases. For some time now it is being called the Mars Orbiter Mission instead. Should it continue to be called Mangalyaan here? --PremKudvaTalk 06:21, 5 October 2013 (UTC)

Glad you mention that; I noticed it before, but Mangalyaan is the official name stated by ISRO. Using a title like "Mars Orbiter Mission" is a very generic name in this encyclopedia that deals with multiple Mars spacecraft. Moving the article's name to Mars Orbiter Mission would be like using a generic title like "Mars Lander", "Mars Probe", "Mars Satellite" or "Mars rover". I think that Mangalyaan is both specific and official. What do you think? CHeers, BatteryIncluded (talk) 16:22, 5 October 2013 (UTC)
I personally like the name Mangalyaan for the reasons you mention. But ISRO seems to have forgotten they named it such, and keep mentioning MOM everywhere now. Which is why I mentioned it here so that more experienced editors can think over it.--PremKudvaTalk 10:36, 7 October 2013 (UTC)
ISRO is calling it the mars orbiter mission not mangalyaan .In there site also they are calling it MOM (Mars orbiter mission). Mangalyaan was the name press gave it , its not the official name talk. please change it !!!! — Preceding unsigned comment added by Axz Man (talkcontribs) 14:25, 8 October 2013 (UTC)
The mission's official web page is now online (about time), and it does not make use of the name Mangalyaan. The challenge remains: there are multiple Mars orbiters, past present and future, from several space agencies. Suggestions? BatteryIncluded (talk) 15:10, 8 October 2013 (UTC)
I think WP:DIFFCAPS applies here. There may have been other orbiter missions to Mars, but since it is the name of this one, using title case should be sufficient. We can always put a hatnote at the top of the page linking to list of missions to Mars to be on the safe side, but the capitalisation is enough for the page title. --W. D. Graham 15:25, 8 October 2013 (UTC)
To clarify, I would strongly support a move to Mars Orbiter Mission --W. D. Graham 15:25, 8 October 2013 (UTC)

────────────────────────────────────────────────────────────────────────────────────────────────────I think it's fairly clear that Mangalyaan is just something which was made up by the media and MOM is the official name. The comments above seem to agree that Mangalayaan is not the best title for this article and WP:TITLE advises against the use of neologisms and made-up terms for the purpose of disambiguation, so I'm going to be bold and move this to Mars Orbiter Mission. I think a hatnote should be sufficient disambiguation - as we have done with our article on India's Satellite Launch Vehicle. --W. D. Graham 10:10, 10 October 2013 (UTC)


The Malayalam spelling doesn't seem to be the same word, or am I missing something?
ചൊവ്വായാനം = chovvaayaanam
mangalyaan = മങ്ഗല്യാന് (talk) 16:50, 5 November 2013 (UTC)

Well, it is an English-language article. I feel that the various spelling in the multiple Indian dialects is not an issue here. BatteryIncluded (talk) 19:19, 5 November 2013 (UTC)
Malyalam is a language of India, not a dialect, one of 26 recognized national languages in that country, and as such it is not a spelling problem but a completely made-up word. I advise the IP to be bold and fix the spelling, as "chovvaayaanam" means something completely different, I'm sure. Wer900talk 22:39, 10 November 2013 (UTC)
So now you want to include all 26 translations? The article was heading that way. Translation of Mangalyaan is enough. BatteryIncluded (talk) 15:14, 11 November 2013 (UTC)
It is not required to have the name in Indian languages in the article.--PremKudvaTalk 11:27, 11 November 2013 (UTC)

Colour or Color[edit]

This is an odd case of WP:ENGVAR. In the variety of English used in India, the correct spelling is colour, however ISRO documentation for the mission has used the US spelling color for the name of one instrument - the Mars Color Camera. Other instrument names use the "correct" Indian spellings (analyser not analyzer, etc). Which should we use in a) the article and b) when referring specifically to that instrument? --W. D. Graham 20:29, 5 November 2013 (UTC)

I think England English will do. BatteryIncluded (talk) 20:45, 5 November 2013 (UTC)
For a more helpful reply: I would say use Indian English spelling for the article, but 'Color' for the instrument. If its name is the 'Mars Color Camera', then that's what it should be called. Robofish (talk) 23:24, 5 November 2013 (UTC)
I agree. An article about an Indian subject should be written in Indian English, but we don't alter proper names for such a reason.
In the area of spaceflight, Space Shuttle Endeavour is a noteworthy example. It's a NASA craft (so American English is the appropriate variety for the article), but we don't impose the spelling "Endeavor", which would be contextually inaccurate (as would "Mars Colour Camera" in this instance, apparently). —David Levy 04:34, 6 November 2013 (UTC)
Their is a correction of the word Color to Colour in ISRO website. Refer Pdf version (Old) & Check table format in Website Version (New). We, in India, are more familiar with the British English version & use the word COLOUR more often, & are taught the same spelling in Schools. Assuming it was wrongly printed in the PDF version, I had hence updated the article. If you think I made a mistake, or if you have any questions, you can modify. Thanks! - Ninney (talk) 02:12, 1 December 2013 (UTC)
Thanks for the update. I've removed the note advising editors to use the American spelling. —David Levy 12:55, 2 December 2013 (UTC)

Periareon, perigee, periapsis...[edit]

In the information box it gives the periareon/apoareon of the Mars orbit. In the "Launch, transfer and orbit" section, these are called apogee/perigee when orbiting Earth, and periapsis/apo-apsis when orbiting Mars. Would it be possible to settle on a single terminology? Boardhead (talk) 15:34, 6 November 2013 (UTC)

  • The term used relates to the body being orbited - -gee relates to Earth, -areon to Mars and -apsis is a generic term. Best practise is to use the correct specific terms, thereby making the orbit's reference body immediately recognisable - so in this case -gee should be used for Earth orbit, -aereon for in orbit of Mars, and -helion for the phase betweeen the two. --W. D. Graham 16:51, 6 November 2013 (UTC)

End of mission disposal[edit]

Has anybody come across information on the mode of disposal at the end of the mission? If performing an uncontrolled crash on Mars, the probe must have been sterilized according to international treaty (see Planetary protection). Any information on that subject would be valuable to this article. Cheers, BatteryIncluded (talk) 16:57, 16 November 2013 (UTC)

Hmm, I have posed this question to them on their FB page. Hopefully they will point us to the answer, as they have been very responsive to people's questions. Anir1uph | talk | contrib 05:05, 17 November 2013 (UTC)
BatteryIncluded, I had to ask them thrice, and they finally have answered our question, out of the thousands they seem to get every day :) Check out the answer here. Now since that is a facebook page, so we can't use it here. But since we now know the answer, we can probably find a reference to that effect somewhere else :) Anir1uph | talk | contrib 17:57, 6 December 2013 (UTC)
So it looks like it has been sterilized according to international treaty, good. But ISRO is still not talking on its disposal mode. I am sure they will post something after the science phase is finished and propellant gets to critical level. Cheers, BatteryIncluded (talk) 18:40, 6 December 2013 (UTC)
yeah, that seems more probable. :) Anir1uph | talk | contrib 18:57, 6 December 2013 (UTC)
I am pleased that both of you (BatteryIncluded and Anir1uph)have been pushing this important question forward and attempting to get an answer to it for the MOM satellite/space probe.
It is a rather odd state of affairs, to my mind, where we are constantly adding to the derelict satellites in the solar system each month (payload satellites as well as the derelict upper stages that disgorge them on their final upper stage orbital trajectory) here in 2013, a totally unpriced negative externality, and the international political regime that supposedly monitors such things leaves the data on each derelict, and each satellite that will soon become a derelict (like India's MOM), so opaque to scrutiny.
If either of you, or others who may read this, are interested in the problem more generally, I'd be happy to have others join me to help to improve Wikipedia by making this encyclopedia of human knowledge more complete in this area of knowledge: human-left derelicts in space. Cheers. N2e (talk) 23:53, 6 December 2013 (UTC)
I asked the same question to ISRO three times in their Facebook page. No answer. I guess they are focusing PR on their efforts and will do their outmost to highlight their successes. I think that a "crashing disposal" is not an appealing PR conversation they are willing to engage in at this time. Eventually they will. Cheers, BatteryIncluded (talk) 00:34, 7 December 2013 (UTC)

Inadvertant removal[edit]

In the Orbit raising maneuvers section, it appears that the description of the 7th maneuver on 16 Nov (the one that was planned to be the sixth prior to the necessity of an extra one after planned manuever no. 4) may have been inadvertantly deleted from the article. The edit commment says that a repeated statement was taken out, but I didn't see where it was repeated, at least not in that section of the article. Could someone else check my eye on this? Cheers. N2e (talk) 14:45, 30 November 2013 (UTC)

My mistake. I just replaced it back. Thank you. Please feel free to just revert blatant mistakes I do in the future; I know you are good editor. BatteryIncluded (talk) 15:52, 30 November 2013 (UTC)

Cruising velocity[edit]

Since V = d/t

d= 780 million km

t= 300 days = 25,920,000 seconds

then, V=30 km/sec

Is this correct? Thanks, BatteryIncluded (talk) 21:08, 30 November 2013 (UTC)

Yes, Perfectly calculated.
30 km/sec, 1,800 km/min, 108,000 km/Hour, 2,592,000 km/Day & 777,600,000 km/300 Days.
But needs confirmation, Velocity seems too high to me. - Ninney (talk) 23:23, 30 November 2013 (UTC)
ISRO has provided distance and time; so velocity is deducted. But I am not eager to place it in the article without confirmation. Thanks, BatteryIncluded (talk) 23:35, 30 November 2013 (UTC)
@BatteryIncluded - V=30 km/sec is perfctly O.K., since NASA Website says MAVEN’s current sun-centered speed is 73,497 mi (118,282 km) i.e. V=32.85 km/sec. The speed can be updated , if required, in MAVEN article with NASA citation, but I am not sure whether to update it in MOM without proper citation (for MOM). Your call. Thanks for the knowledge ! - Ninney (talk) 02:31, 1 December 2013 (UTC)
Well, it is not completely accurate, as the path on which the craft is moving is not a straight line, but a elliptical transfer orbit. At the beginning, the craft will have a speed of ~32km/s and by the time the craft reaches Mars for orbital insertion, the velocity would have slowed to ~22km/s. (Things moving on an ellipse slow as they move away from the focus, which in this case is the sun.) See this question along with the reply by ISRO. Hope it helps! Cheers :) Anir1uph | talk | contrib 07:08, 1 December 2013 (UTC)
Yes it helps. Thank you. -BatteryIncluded (talk) 14:35, 1 December 2013 (UTC)


@ BatteryIncluded, and others: Is some of the info included here relevant enough to be included in the article? Mars Orbiter has spent 55 per cent fuel on 60 lakh km of travel so far Thanks! Anir1uph | talk | contrib 02:24, 19 December 2013 (UTC)

Fuel consumption seems nominal and within the expected parameters. The editor did one typo though: it is not bio-propellant but bi-propellant (oxidizer + hydrazine). CHeers, BatteryIncluded (talk) 13:28, 19 December 2013 (UTC)
Oh haha! I totally missed that! :) Anir1uph | talk | contrib 14:56, 19 December 2013 (UTC)

Late ship postponed Mars mission launch, says official[edit]

The info here may be useful on this article, and other related articles. Cheers! Anir1uph | talk | contrib 13:36, 17 January 2014 (UTC)

  • The delay due to the ships is mentioned in the article, the reason for the ships delay is not. But I feel that is not notable. If the delay had caused a cancelled launch then perhaps it could have been added. --PremKudvaTalk 04:13, 18 January 2014 (UTC)
OK, but if we ever take the article for a GA/FA review, the reviewer would ask that what was the reason for the delay, as it affects the completeness of info in the article. So i just posted this link here, in case the info is needed. Cheers! Anir1uph | talk | contrib 12:12, 18 January 2014 (UTC)
    • Sorry for the delayed response. Well if you say do go and add that information.--PremKudvaTalk 05:37, 12 February 2014 (UTC)

Need of more pictures (Demanded by many readers)[edit]

As per the demands by Wiki readers and Users, We need some more pictures of the spacecraft, especially a picture of its layout/design. Amitrc7th (talk) 13:52, 18 January 2014 (UTC)

Most people would agree. Unfortunately, all images used in Wikipedia must comply with the required copyright laws. ISRO owns the copyrights of all the images it produces, which make them uneligible to be uploaded to Wikipedia. BatteryIncluded (talk) 01:47, 19 January 2014 (UTC)

Public reception?[edit]

Quite a bit of sources highlighting the public reception and the reasons for its low cost are available. Here are a few:

Maybe a separate section "Public reception" or just "Reception" (couldn't think of a better name) can be added? It would consist of the "space race in Asia" and its general reception—the positive and negative opinions on it. Also, the reasons for it costing less needs to be added elsewhere. I'm keeping this here for the rest of you more familiar with the subject to decide. I'm not sure what's relevant here and what's not, and if anyone agrees and feels up for it...please go ahead and add it. -Ugog Nizdast (talk) 15:31, 6 February 2014 (UTC)

I agree that this craft, along with Chang'e 3 has also received quite a bit of attention for reasons other than the scientific mission. If reliable/prominent sources are discussing the MOM for socio-economic reasons also, then that must be added here too. The new section can be "Public reception". But I too would leave this up to the more experienced editors on this topic, because they would know if/how such issues are dealt with for similar missions of other nations. Cheers :) Anir1uph | talk | contrib 01:17, 12 February 2014 (UTC)
I agree. But since they are [published] editorial opinions, I would name such section "Public perceptions". Cheers. --BatteryIncluded (talk) 04:57, 12 February 2014 (UTC)