Background information
Acknowledgements and References
Asteroids
16 Psyche
32 Pomona
34 Circe
47 Aglaja
52 Europa
55 Pandora
66 Maja
102 Miriam
110 Lydia
122 Gerda
153 Hilda
275 Sapientia
279 Thule
607 Jenny
============================================================================
Asteroid Plate Date Time RA____2000____DEC RA____1950_____DEC
110 Lydia O-31 21/12/1949 20:21 03 54 13 +22 26 40 03 51 15 +22 17 50
Field
110 Lydia O-1337 02/23/1955 20:16 07 09 16 +29 39 06 07 06 06 +29 43 58
Field
110 Lydia O-1595 04/08/1956 22:41 13 12 40 -01 25 30 13 10 06 -01 09 35
Field
SkyMorph Results
xe357 1949-12-22 05:07:16 03 54 11.86 +22 26 37.8 04 02 40.74 +24 24 31.3 11.90
xe308 1955-02-23 05:12:14 07 09 30.47 +29 40 04.9 07 05 13.15 +29 47 20.4 12.50
xe617 1956-04-09 06:56:57 13 12 39.62 -01 25 29.6 13 19 26.07 -00 45 49.2 11.70
============================================================================
Asteroid Plate Date Time RA____2000____DEC RA____1950_____DEC
153 Hilda O-1494 11/23/1955 02:22 06 13 45 +17 26 20 06 10 50 +17 27 14
Field
SkyMorph Results
xe420 1955-11-11 11:47:23 06 19 07.71 +17 45 14.2 06 32 27.92 +17 54 02.9 14.20
xe419 1955-11-24 02:22:12 06 13 54.92 +17 26 44.6 06 08 28.55 +17 59 06.3 14.09
Note date discrepancy Skymorph: xe419 and Fourmilab
===========================================================================
122 Gerda O-1300 12/20/1954 19:29 2 38 32 +13 40 16 2 35 48 +13 27 21
Field
SkyMorph Results
xe470 1954-12-21 03:27:25 02 38 32.24 +13 40 14.8 02 31 51.10 +12 38 41.7 13.20
Discrepency: according to http://asteroid.lowell.edu/cgi-bin/koehn/astfinder
122 Gerda also on O-811 at 22 45 12.15 -07 07 21 (plate center 22h 55.508m/-5° 13.598m
Image from NOFS
gif 001 POSSI 0702 811 1953.6797 07.03 5.990479 -0.095882 5.998622 -0.092529
gif 002 POSSI 0702 811 1953.6797 07.87 5.990479 -0.095882 5.998622 -0.092529 103aO None
==========================================================================
607 Jenny O-470 1/31/1952 00:49 9 59 59 +02 01 32 09 57 23 +02 15 59
Use Aladin-click here
'Load' ->: 9 59 59 +02 01 32 -> 'Submit' -> "POSS1 E (Red) ~14.1x14.1
Field
607 Jenny O-1455 10/22/1955 03:14 05 24 49 +31 33 14 05 21 35 +31 30 32
Field
SkyMorph Results
xe609 1952-02-01 09:13:50 09 59 59.20 +02 01 35.2 10 07 25.06 -00 42 20.1 13.50
xe304 1955-10-23 11:10:60 05 24 49.06 +31 33 05.8 05 21 11.85 +30 03 04.6 14.55
========================================================================
275 Sapientia O-417 11/7/1951 02:49 07 09 52 +17 50 8 (7 3 58 17 55 59)
From
SkyMorph results
xe421 1951-11-08 11:04:30 07 10 11.16 +17 48 45.2 06 56 26.63 +17 49 03.5 13.39
Plate not returned by NOFS, NOFS returns following for that RA/DEC:
No. Survey Field Plate Date Time RA (B1950) DEC RA (J2000) DEC Type Filt Exp H.A. dbID Nimg
jpg 001 POSSI 0423 641 1953.0226 06.67 1.909027 0.311149 1.918136 0.309973 103aE RP2444 40 1:09E se0423 0002
jpg 002 POSSI 0423 641 1953.0226 06.45 1.909027 0.311149 1.918136 0.309973 103aO None 10 1:25E so0423 0004
NOFS Plate date for Plate 417:
0422 417 1951.8508 10.82 1.804380 0.312094 1.813526 0.311269 103aE RP2444 50 0:45E
=======================================================================
279 Thule O-976 1954-Feb-09 01:41 Not Found Aladin 10 43 02.37 +11 19 11.4
Use DSS Plate Finder - click here
RA = 10 42 54 DEC =11 20 00
Select plate tagged as: POSS-E Red Plate xx103aE + plexi (POSS-I E) 45.0 XE491 (08WO) 1954.111
or www.nofs.navy.mil
Use NOFS - click here
RA = 10 42 54 DEC =11 20 00
Check 'Images', Uncheck 'Finder Charts'
'Retrieve Data'
When processing done, click the first selection returned(wait, it will be there!): "jpg 003 POSSI 0492 976 "
SkyMorph Results
xe469 1950-08-14 11:12:53 01 55 47.37 +09 28 48.9 02 07 47.47 +12 41 31.9 15.35
xe491 1954-02-10 10:15:46 10 43 00.67 +11 19 22.2 10 55 37.32 +11 13 41.4 14.71
======================================================================
55 Pandora O-222 12/08/1950 19:50 02 52 53 +25 26 07 02 49 58 +25 13 54
Field
55 Pandora O-1171 08/07/1954 23:47 22 27 04 -19 03 38
SkyMorph Results
xe354 1950-12-09 03:48:20 02 52 54.23 +25 26 06.4 02 44 21.95 +24 37 04.8 11.40
Discrepency: according to http://asteroid.lowell.edu/cgi-bin/koehn/astfinder
55 Pandora also on O-1171 at 22 27 3.593 -19 3 38.17 (plate center 22h 31.827m/-17° 15.222m)
Image from NOFS
=====================================================================
16 Psyche O-1481 11/18/1955 00:01 04 57 05 +17 50 14 04 54 10 +17 45 41
Field
16 Psyche O-1501 12/10/1955 23:15 04 37 21 +17 17 24 04 34 27 17 11 19
Field
16 Psyche O-1150 7/28/1954 23:17 20 50 34 -15 46 17 Where to find plate O-1150
SkyMorph Results
xe416 1955-11-19 07:59:34 04 57 05.33 +17 50 13.0 04 56 26.28 +18 14 07.1 9.60
xe415 1955-12-11 07:08:02 04 37 22.02 +17 17 20.4 04 32 24.15 +18 18 53.3 9.51
Discrepency: according to http://asteroid.lowell.edu/cgi-bin/koehn/astfinder
16 Psyche also on O-1150 at 20 50 34 -15 46 16 (plate center 20h 56.166m -17° 26.729m )
Image from NOFS
=====================================================================
34 Circe O-1282 11/23/1954 21:18 2 19 35 +08 24 24 2 16 55 +08 10 38
Use Aladin
Use Aladin - click here
'Load' ->: 2 19 35 +08 24 24 -> 'Submit' -> "POSS1 E (Red) ~14.1x14.1
Field
SkyMorph Results
xe529 1954-11-24 05:34:41 02 19 35.35 +08 24 23.1 02 07 36.73 +06 41 32.5 12.60
====================================================================
32 Pomona O-855 10/10/1953 18:54 20 39 40 -11 41 07
32 Pomona O-791 08/14/1953 23:18 20 54 03 -08 22 36
Use NOFS - click here
RA = 20 54 03 DEC = -08 22 36
Check 'Images', Uncheck 'Finder Charts'
'Retrieve Data'
When processing done, click the first selection returned(wait, it will be there!): "jpg 003 POSSI 0758 791 "
and "jpg 004 POSSI 0758 791"
SkyMorph Results
Obs.
ID Time Predicted Object Observation Center Mag.
Position
xe414 1950-12-09 05:56:40 04 11 02.29 +17 04 14.6 04 08 21.36 +18 23 27.0 11.30
xe470 1954-12-21 03:27:25 02 48 05.08 +13 47 15.9 02 31 51.10 +12 38 41.7 12.00
Discrepency: according to http://asteroid.lowell.edu/cgi-bin/koehn/astfinder
32 Pomona also on O-855 at 20 39 40 -11 41 07 (plate center 20h 31.959m/-11° 30.548m)
Image from NOFS
32 Pomona also on O-791 at 20 54 03 -08 22 36 (plate center 20h 55.910m/-11° 26.757m)
Image from NOFS
====================================================================
102 Miriam O-1460 10/24/1955 00:13 03 26 06 +16 48 47 03 23 17 +16 38 22
Field
SkyMorph Results
xe421 1951-11-08 11:04:30 07 03 29.65 +17 00 36.8 06 56 26.63 +17 49 03.5 13.51
xe481 1951-11-28 09:04:05 06 57 34.79 +16 10 15.4 06 56 05.44 +11 49 05.7 13.09
xe551 1953-04-15 05:33:06 10 57 52.27 +02 18 15.8 10 55 31.23 +05 13 41.6 14.50
xe412 1955-10-25 09:09:53 03 26 05.08 +16 48 36.5 03 20 13.92 +18 31 45.6 11.80
====================================================================
52 Europa O-1283 11/23/1954 22:25 02 26 57 +03 07 11 02 24 21 +02 53 45
Field
SkyMorph Results
xe590 1954-11-24 06:38:51 02 26 57.52 +03 07 12.3 02 31 26.30 +00 38 43.3 10.70
===================================================================
47 Aglaja O-722 4/14/1953 21:26 11 07 10 +06 34 21 11 04 34 +06 50 34
Field
SkyMorph Results
xe551 1953-04-15 05:33:06 11 07 09.97 +06 34 18.5 10 55 31.23 +05 13 41.6 12.80
===================================================================
66 Maja O-1337 2/23/1955 20:16 07 01 16 +26 45 35
Field
SkyMorph Results
xe308 1955-02-23 05:12:14 07 01 15.04 +26 46 51.5 07 05 13.15 +29 47 20.4 13.30
===========================================
References and Acknowledgements
US Naval Observatory
This research has made use of the USNOFS Image and Catalogue Archive
operated by the United States Naval Observatory, Flagstaff Station
(http://www.nofs.navy.mil/data/fchpix/).
Skymorph:
Horizons:
Giorgini, J.D., Yeomans, D.K., Chamberlin, A.B., Chodas, P.W., Jacobson, R.A., Keesey, M.S., Lieske, J.H.,
Ostro, S.J., Standish, E.M., Wimberly, R.N., "JPL's On-Line Solar System Data Service", Bulletin of the American
Astronomical Society 28(3), 1158, 1996.
List of POSS plates
The asteroids presented here had positions on the POSS 1 plates calculated by myself as
an undergrad in astronomy at Penn State in 1978-1979.
I had a great faculty advisor, Dr Peter U., that was willing to allow me to
conduct research of my own choosing for independent studies credits in astro.
I was doing a minor in CompSci and became enamored with the use of computers to solve
number crunching problems in astro.
I dug around a bit and learned the department also had copies of the POSS on site
and thought Hmmm, orbital elements and a history of the sky spread over years.
At the time the computing facilites at PSU had an IBM 3033 mainframeand I as an undergrad had
access to card punch machines.
I started tearing thru all the books I could about the intgrals used in position
calculations of bodies from orbital elemments and pertubations.
Next came determinations of the POSS plate ID's and centers that encompassed some number
of degrees centered around the ecliptic.
Dr U. made initial contact with Brian M. inquiring about the
availability of publications containing orbital elements of minor planets. Dr M.
was able to provide an issue of
Ephemerides of Minor Planets published in the then USSR.
The next step was examining the the first few hundred asteroids for those with high
brightness.
This was followed by the scouring of algorithms that would provide at least some level
going 'extreme' distances back in time.
The Runga Kutta 4'th order was used to generate initial conditions for the
Adams Bashforth/Mou 4'th order predictor corrector continuation.
All calculations were run as N-body with simultaneous integrations of the
planets used as pertubation forces.
What came out of it was a Fortran program and datasets of POSS positions/times
and asteroids with orbital elements.
All on punched cards at the mercy of the computer operators
("Time and/or Records Equaled or Exceeded" when a card fell out of a deck)
An average run was to provide enough asteroid elements to not use up the
20 minutes of computer time per run on the mainframe followed by plate searching with a magnifier.
Gene
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