525 Adelaide
Encyclopedia
1937 JG; 1955 SE1;
1955 UF
|-
! bgcolor="#ffffcc" colspan="2" | Discovery
|-
| width="140" | Discoverer
| Joel Hastings Metcalf
|-
| Discovery date
| October 21, 1908
|-
| Discovery site
| Taunton, Massachusetts
|-
! bgcolor="#ffffcc" colspan="2" | Orbital elements
|-
| colspan="2" align="center" | Epoch
August 18, 2005 (JDCT
2453600.5)
|-
| Eccentricity (e)
| 0.102
|-
| Semimajor axis (a)
| 2.245 AU
|-
| Perihelion (q)
| 2.015 AU
|-
| Aphelion (Q)
| 2.475 AU
|-
| Orbital period
(P)
| 3.364 a
|-
| Inclination
(i)
| 5.996°
|-
| Longitude of the ascending node
(Ω)
| 203.577°
|-
| Argument of Perihelion (ω)
| 263.672°
|-
| Mean anomaly
(M)
| 220.326°
|}
1955 UF
|-
! bgcolor="#ffffcc" colspan="2" | Discovery
|-
| width="140" | Discoverer
| Joel Hastings Metcalf
Joel Hastings Metcalf
Joel Hastings Metcalf was an American astronomer.Metcalf graduated from Harvard Divinity School in 1892. He served as a Unitarian minister in Burlington, Vermont and then later in Taunton, Massachusetts, Winchester, Massachusetts and Portland, Maine.He discovered or co-discovered several comets,...
|-
| Discovery date
| October 21, 1908
|-
| Discovery site
| Taunton, Massachusetts
Taunton, Massachusetts
Taunton is a city in Bristol County, Massachusetts, United States. It is the seat of Bristol County and the hub of the Greater Taunton Area. The city is located south of Boston, east of Providence, north of Fall River and west of Plymouth. The City of Taunton is situated on the Taunton River...
|-
! bgcolor="#ffffcc" colspan="2" | Orbital elements
|-
| colspan="2" align="center" | Epoch
Epoch (astronomy)
In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as celestial coordinates, or elliptical orbital elements of a celestial body, where these are subject to perturbations and vary with time...
August 18, 2005 (JDCT
Julian day
Julian day is used in the Julian date system of time measurement for scientific use by the astronomy community, presenting the interval of time in days and fractions of a day since January 1, 4713 BC Greenwich noon...
2453600.5)
|-
| Eccentricity (e)
| 0.102
|-
| Semimajor axis (a)
| 2.245 AU
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
|-
| Perihelion (q)
| 2.015 AU
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
|-
| Aphelion (Q)
| 2.475 AU
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
|-
| Orbital period
Orbital period
The orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of...
(P)
| 3.364 a
Julian year (astronomy)
In astronomy, a Julian year is a unit of measurement of time defined as exactly 365.25 days of 86 400 SI seconds each, totaling 31 557 600 seconds. The Julian year is the average length of the year in the Julian calendar used in Western societies in previous centuries, and for which the unit is...
|-
| Inclination
Inclination
Inclination in general is the angle between a reference plane and another plane or axis of direction.-Orbits:The inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit...
(i)
| 5.996°
|-
| Longitude of the ascending node
Longitude of the ascending node
The longitude of the ascending node is one of the orbital elements used to specify the orbit of an object in space. It is the angle from a reference direction, called the origin of longitude, to the direction of the ascending node, measured in a reference plane...
(Ω)
| 203.577°
|-
| Argument of Perihelion (ω)
| 263.672°
|-
| Mean anomaly
Mean anomaly
In celestial mechanics, the mean anomaly is a parameter relating position and time for a body moving in a Kepler orbit. It is based on the fact that equal areas are swept at the focus in equal intervals of time....
(M)
| 220.326°
|}
525 Adelaide is an S-type asteroid
S-type asteroid
S-type asteroids are of a stony composition, hence the name. Approximately 17% of asteroids are of this type, making it the second most common after the C-type.-Characteristics:...
http://www.psi.edu/pds/resource/taxonomy.html belonging to the Flora family
Flora family
The Flora family of asteroids is a large grouping of S-type asteroids in the inner main belt, whose origin and properties are relatively poorly understood at present...
in the Main Belt.
The object A904 EB discovered March 14, 1904 by Max Wolf
Max Wolf
Maximilian Franz Joseph Cornelius Wolf was a German astronomer and a pioneer in the field of astrophotography...
was named 525 Adelaide and was subsequently lost. Later, the object 1930 TA discovered October 3, 1930 by Sylvain Arend was named 1171 Rusthawelia
1171 Rusthawelia
1171 Rusthawelia is a Main-belt asteroid discovered on 3 October 1930 Sylvain Julien Victor Arend at Uccle.- External links :*...
. In those pre-computer days, it was not realized until 1958 that these were one and the same object. The name Rusthawelia was kept (and discovery credited to Arend); the name 525 Adelaide was reused for the object 1908 EKa discovered October 21, 1908 by Joel Hastings Metcalf
Joel Hastings Metcalf
Joel Hastings Metcalf was an American astronomer.Metcalf graduated from Harvard Divinity School in 1892. He served as a Unitarian minister in Burlington, Vermont and then later in Taunton, Massachusetts, Winchester, Massachusetts and Portland, Maine.He discovered or co-discovered several comets,...
.