1199 Geldonia
asteroid
1199 Geldonia (provisional designation 1931 RF) is an Eoan asteroid from the outer regions of the asteroid belt, approximately 32 kilometers in diameter. It was discovered on 14 September 1931, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. The asteroid was named after the Belgian town of Jodoigne.
Orbit and classification
Geldonia is a member the Eos family (606), the largest asteroid family of the outer main belt consisting of nearly 10,000 asteroids. It orbits the Sun at a distance of 2.9–3.1 AU once every 5 years and 3 months (1,915 days). Its orbit has an eccentricity of 0.03 and an inclination of 9° with respect to the ecliptic.
The body's observation arc begins with its first identification as A921 TF at Heidelberg Observatory in October 1921, almost 10 years prior to its official discovery observation at Uccle.
Physical characteristics
In the Tholen classification, Geldonia has an ambiguous spectral type, closest to a carbonaceous C-type asteroid with some similarities to the G-, T- and the primitive P-type asteroids, and was flagged as a nosy spectrum (CGTP:). The overall spectral type for members of the Eoan family on the other hand is that of a K-type.
Rotation period
In November 2010, a rotational lightcurve of Geldonia was obtained from photometric observations by Italian astronomer Silvano Casulli.
“1199 Geldonia” enters the record as asteroid. Crown Archives preserves that source wording while asking what Geldonia and asteroid can confirm, complicate or overturn.
Why this record matters
“1199 Geldonia” is worth following because a concise public description often conceals a longer documentary argument. Here, Geldonia and asteroid provides the most credible route into that argument.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 5, 2026. The linked authority identifier is Q136924. The first chronological checks are 1199, 1931, 1921 and 2010.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “1199 Geldonia”, its source revision and the description used here.
- Expand the search: follow 1199 Geldonia primary sources, 1199 Geldonia archive and Geldonia research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “1199 Geldonia”?
- What terminology or title could unlock a more precise catalogue search?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “1199 Geldonia” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.