Updated 2004 Mar 9
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1. General comments

In the master list, I have used the data for the IAU list (Blue 2004)
for unlettered craters. For lettered craters, I have used
the data in Andersson and Whitaker 1982 (AW82), except that I have
changed the orthography to match that of the preferred spellings
in the IAU list, for example
       Ceraski K   ->   Tseraskiy K


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2. IAU spelling changes pre 1982

8 craters whose spelling was changed prior to AW82 by the IAU 
but for which the changes were rejected by AW82 on the grounds
that the older versions were more familiar and established in the
literature. The IAU spellings have been used in this list.

Bellingshausen -> Bellinsgauzen
Ceraski        -> Tseraskiy
Engelhardt     -> Engel'gardt
Friedmann      -> Fridmann
Hanskiy        -> Ganskiy
Lenz           -> Lents
L\:utke        -> Litke
Sternberg      -> Shternberg


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3. IAU spelling changes post 1982

6 craters changed since AW82, which I am sure the authors of AW82
would also have objected to:

Bernouilli     -> Bernoulli
Hero           -> Heron
Lippman        -> Lippmann
Noether        -> N|:other
Walter         -> Walther 
Widmanstatten  -> Widmannst|:atten

I have adopted the IAU spellings rather than the AW82 spellings,
although personally I think AW82 are right and the earlier spellings
should be reinstated.

The large crater at 33S 1E, orginally spelt Valtherus by Riccioli
and later Walter, is now spelt Walther. In a remarkably
stupid move sure to cause confusion, a different, much smaller crater
has since been given the name Walter.

AW82 also uses the following spelling which I have not adopted:
(Sierpinski     -> Sierpi|%nski)

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4. Lower case in surname prefixes where appropriate

I have adopted AW82's spellings for the following:

D'Alembert     -> d'Alembert
D'Arrest       -> d'Arrest
D'Arsonval     -> d'Arsonval
De La Rue      -> de la Rue
De Moraes      -> de Moraes
De Morgan      -> de Morgan
De Roy         -> de Roy
De Sitter      -> de Sitter
De Vico        -> de Vico
De Vries       -> de Vries
La Caille      -> la Caille
La Condamine   -> la Condamine
La P\%erouse   -> la P\%erouse
Le Gentil      -> le Gentil
Le Monnier     -> le Monnier
Le Verrier     -> le Verrier
Ten Bruggencate-> ten Bruggencate
Van den Bergh  -> van den Bergh
Van der Waals  -> van der Waals
Van Gent       -> van Gent
Van Maanen     -> van Maanen
Van Wijk       -> van Wijk
Von der Pahlen -> von der Pahlen
Von Neumann    -> von Neumann
Von Zeipel     -> von Zeipel

Note that not all such names have been changed; individuals
of French, German and Dutch descent living in English speaking
countries sometimes capitalize the prefixes.


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5. Special cases:

The crater Eppinger, whose name was revoked in 2002, was originally
Euclides D. I have restored that name.

Note that the crater Greaves appears in AW82 under its correct name
and also under its old name of Lick D.

For non-craters, I have adopted the traditional nomenclature
of AW82 in which the "Mons" is omitted for
mountains Pico, Piton, R|:umker, Gruithuisen Gamma/Delta, Hadley Delta,
rather than the IAU version with Mons added.
I have used Rimae Herigonius and Opelt (IAU) rather than Rima Herigonius 
and Opelt (AW82).

Two pairs of small craters Alan and Delia, and Krishna and Manuel,
have identical positions in the IAU list. No position is given in AW82.
Higher accuracy coordinates are needed to distinguish them.

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6. Diacritical marks

The IAU list uses | as an escape character to denote diacritical marks.
I haven't found a key to these codes, but it appears that:

IAU  TeX  Mark
|%    \'   Acute accent  
|`    \`   Grave accent
|^    \^   Circumflex
|:    \"   Umlaut
|v    \v   Caron,
|u    \u   Breve (used for Romanian a and Korean u,o marks)
|,    \c   Cedilla with d,s
|~    \~   Tilde
|-    \=   Macron (overbar)


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7. Discoverers and dates of approval.


The two final columns are references (see Refs file); the first is to
the first identification of the feature under any name (essentially the
"discovery" of the feature) and the second is to the application (or
official approval post 1961) of the current name to the feature.

If a feature is named 'Barkla' in 1979 but has been known under
other names for centuries, to merely record 1979 as its only associated
date loses important information. I regard the 'discovery' of a feature
as the first publication discussing the feature as a single identified
thing. 

The second reference column asks 'when did the feature officially become
called by this name?'. The trick here is the qualification 'officially';
in the USGS/IAU gazetteer this is simply the IAU approval date, starting in
1935 with NLF. I take a less formal and more pragmatic approach, and
consider a name official if it was used in a widely accepted lunar map
prior to NLF and later made canonical by NLF or IAU; thus for those of
Riccioli's features which have retained their names, the approval date
is considered to be 1651 and not 1935.  This approach emphasizes the
antiquity of nomenclature of features such as Geminus compared to those
such as Babbage. I also consider certain NASA documents, particularly
AW82, to be 'official' even if not IAU-official, on the grounds that
(the USSR contributions notwithstanding) NASA led most lunar exploration
and cartography in the 1960-1990 period. 

Since I am primarily interested in surface features rather than
nomenclature for its own sake, in contrast to Whitaker 1999, I give no
credit to the use of a name on one feature if it has been moved to
another. Specifically, the fact that Schmidt 1878 used Bunsen for one
crater would (if I knew which crater) give it an 1878 entry in that
feature's discoverer column, but would not affect the nomenclature
approval column for either that crater or the current Bunsen crater,
approved by IAU 1964.

Much work remains to be done for farside and lettered craters,
particularly for the 'discovery' date. Someone needs to go through the
19th-century atlases, NLF and SLC to determine the first use for each of the
nearside lettered craters; for now they are all marked as 'NLF?'. For
the farside craters, lettered and otherwise, someone needs to go through
the early farside maps and catalogs and identify the current names with
early designations to see when features were first identified. All the
farside lettered craters are given 'AW82' in the approval ref column,
but are left blank in the discovery column since at least some of them
appeared in pre-AW82 compilations as numbered features.

In this version of the list, 'N' in the final column denotes
new nomenclature since AW82. 'X' denotes Group 3 features in AW82.
These will eventually be replaced by proper references.


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8. New names

The identifications in Appendix U of Whitaker 1999 have been included in
the crossids file. By comparison of positions and diameters in IAU and
AW82 I infer that Sternfeld = Lodygin G, there being no Lodygin B in
AW82. Similarly, Yakovkin = Pingr|%e H, not A. Both Amundsen and
H|%ederv|%ari are in the IAU list, with overlapping but not coincident
positions, although Appendix U claims they are identical.


9.  Apollo landing site features
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I have not followed the IAU convention of marking all Apollo landing
site names as 'LF'. Rather, craters are marked as craters and
included in the crater list; other features are marked as Mons, Rima etc.
as best I can determine; some generic features are marked as Location.
I distinguish between Location - "some random place we give a name to" -
and Site - landing site of a spacecraft. So Columbia Memorial Station
on Mars is a Site, while Adirondack Rock is a Location (I don't think
you can really argue it is a Mons :-), although Grissom Hill probably is).

10. Deleted names
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A number of features have been renamed, especially lettered craters.
The Crossids file gives these correspondences.
Most of the "deleted features" (category 6, names in []) in IAU were
never formally approved and are not included in this list.


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11. References

Andersson, L.E. and Whitaker, E.A., 1982 (AW82), NASA Catalogue of Lunar
                Nomenclature, NASA RP-1097.
Blue, J, 2004,  Gazetteer of Planetary Nomenclature.
                http://planetarynames.wr.usgs.gov/, accessed Jan 2004.
Whitaker, E.A., 1999, Mapping and Naming the Moon.