Wednesday, March 17, 2010

New discoveries from Santa Maria de Montmagastrell Survey

Weißt du wieviel Sternlein stehen an dem blauen Himmelszelt?
Total asteroids discovered from MPC B74: 303
Total asteroids discovered from les Planes de Son (MPC C29): 13
Total asteroids discovered from Observatori del Teide (MPC 954) = 20
Total discoveries B74 + C29 + 954 = 336

Our asteroid 266983 (2010 WE66) was named Josepbosch after my son Josep Bosch Olivera. Also 322390 (2011 QN42) was named Planes de Son and 367693 (2010 RZ109) was named Montmagastrell.

This site has discovered three NEA Aplollo class: 2009 ST19 (see below), 2012 UT9 and 2015 FQ

Asteroid NEO Apophis, on January 12, 2013
Stars are elongated because of apparent motion of the asteroid during the exposition

Follow-up Astrometry
This site has sent a total of 8377 observations until March 2015
All reports to Minor Planet Center. Follow-up astrometry and recoveries are made with the Advanced Coma-Free optical system like the Ritchey-Chrétien 16 inch f/10 Schmidt-Cassegrain at Santa Maria de Montmagastrell Survey (MPC code B74). The  CCD has 24 micron pixels and a 21'x21' field. At the moment, the telescope pointing and dome control are computer controlled from the above control room. The dome is a sliding roof that moves on rails.

Data Reduction
All data are reduced on a PC. Flat-fielding is done using MaxIm DL. The astrometry is done with both TheSky6 Astronomy Software and Herbert Raab's Astrometrica which has an excellent track and stack option. As Astrometrica also allows the simple identification of all objects in the field, this is currently the software of choice.

Following the release of UCAC-4, virtually all of our astrometry is done using this. An astrometric accuracy in the fit of 0".0 – 0”.5 RMS in each coordinate is obtained for several hundred stars within the field. For high S/N targets, the absolute accuracy of the astrometry is of about the same magnitude; the absolute accuracy of UCAC-4 being smaller than this.

The results of the astrometry of NEO observed from SM de Montmagastrell Observatory can be found on code B74 page from NEODyS The contributions of our observatory have been published in the IUA Electronic Circulars and the Minor Planet Center Electronic Circulars: .html
2015 KS18
2015 KJ19
2015 KW156
C/2015 M1 
2015 MF95
C/2015 M3  

Results 2015
Discoveries on JanuaryAS203 2015 - 2015 AT203 - 2015 BK3 - 2015 BS511  (Hungaria)

Discoveries on February2015 DA177 - 2015 DF107

Discoveries on March:  2015 FQ  (NEO Apollo. Object was initially flagged as a Virtual Impactor by SENTRY JPL)

Discoveries on June: 2015 ML44 - 2015 MM44 - 2015 MO59 - 2015 MQ91

Discoveries on July:   2015 MX97 - 2015 OA (from Observatorio del Teide MPC 954) - 2015 OB (from MPC 954) - 2015 OA1 (from MPC 954) - 2015 OW (from MPC 954) - 2015 OR26 (from MPC 954) - 2015 OS26 (from MPC 954) - 2015 OU25 (from MPC 954) - 2015 OV26 (from MPC 954) - 2015 OW26 (from MPC 954) - 2015 OG33 (from MPC 954) - 2015 OH33 (from MPC 954) - 2015 OJ33 (from MPC 954) - 2015 OB35 (from MPC 954) - 2015 OC35 (from MPC 954) - 2015 OD35 (from MPC 954)

Results 2014
Until December 31, a total of 1300 observations of asteroids and comets were sent to the MPC, 39 of which were NEO.

During January and February there were no observations due to bad weather: the sky is always covered.
Discoveries on March:  2014 GL21

Discoveries on April2014 HC4  - 2014 HD4  - 2014 HK192 - 2014 HK132 

Discoveries on May:  2014 JZ282014 km73 - 2014 KU83

Discoveries on June:  2014 ML16

Discoveries on July:  2014 OH1 - 2014 OK (From Observatori del Teide MPC 954)

Discoveries on September: 2014 QT432 2014 QU432 - 2014 RC7 - 2014 RH7  - 2014 RN60  - (Outer Main-belt Asteroid) - 2014 RX18 (From Observatori del Teide MPC 954) - 2014 RJ40 (from Observatori del Teide MPC 954) - 2014 SJ301 - 2014 SK301 - 2014 SL3012014 SM301 - 2014 SN301  - 2014 SY323 - 2014 SX323 

Discoveries on October:  2014 TO31  - 2014 TC55 - 2014 TD55 - 2014 TE55 - 2014 TF55 - 2014 TG552014 TW62 - 2014 TX622014 TY62 - 2014 TZ62  - 2014 UH7 - 2014 UJ7  - 2014 UW10 = 2,014 UB30 - 2014 UD58 (from Observatori del Teide) -  2014 UU42 - 2014 UL51 - 2014 UP17 (From Observatori del Teide) -  2014 UW55  - 2014 UH109 - 2014 UJ109 - 2014 UK109   (2012 BS137) - 2014 UL109 (2013 QL16) - 2014 UB114 - 2014 UC114 - 2014 UD114  - 2014 UE114 (2011 EN60) - 2014 UF114 

Discoveries on November:  2014 VQ27 - 2014 WA67 - WM69 2014

Results 2013
Until December 31, a total of 2047 observations of asteroids and comets were sent to MPC.

A total of 331 observations of NEOs were sent to the Minor Planet Center from 7 January to 31 December 2013.

Discoveries on JanuaryAZ19 2013 - 2013 AE27 - 2013 AF27 - 2013 GA27 - 2013 AT31 - 2013 AU31 - 2013 AV31 - 2013 AW31  - 3013 AY59 - 2013 AZ59 - 2013 AA60 - AA64 2013 - 2013 AB64 - 2013 AF64 - 2013 AE64 - 2013 AR64  - 2012 AM72 - 2013 AA77  - 2013 BV69  .

Discoveries on February: 2013 CH126 - 2013 CK176  - 2013 CZ208

Discoveries on March: 2013 FR12

Discoveries on April:   2013 GL1  (Outer Main-belt Asteroid) - 2013 GD12  - 2013 GM34 - 2013 GN34 - 2013 HF1 - 2013 HG1

Discoveries on May:   2013 JU21  - 2013 JV21  -  2013 JW21  ( 2005 YA50 ) - 2013 JO26

Discoveries on June: 2013 NZ7  - 2013 NE6  - 2013 ND6  

Discoveries on August: 2013 PM25  - 2013 PN25  - 2013 PO25  - 2013 QA36

Discoveries on September: 2013 RA  -  2013 RB  - 2013 RC  - 2013 RQ - 2013 RG9  -2013 RP19 - 2013 RT42 - 2013 RU42 - 2013 RV42  (Outer Main-belt Asteroid) - 2013 SS21 - 2013 SV21

Discoveries on October:  2013 TA133  -  2013 TV129 - 2013 TM132 - 2013 TZ130 - 2013 TN131 - 2013 TL131  (Outer Main-belt Asteroid) - 2013 TM131  - 2013 TC132 - 2013 TW131 - 2013 TX131

Discoveries on November:  2013 UV11  (The orbit of this asteroid does not match any defined orbit) - 2013 VS5  - 3013 VY10 - 2013 VZ10  - 2013 WZ - (Inner Main-belt Asteroid: Hungaria) - 2013 WA1 - 2013 WB1 - 2013 WC1 - 2013 WD1  - 2013 WL60 - 2013 WK104 

Discoveries on December:  2013 XB - 2013 XC -  2013 XD  (Outer Main-belt Asteroid) - 2013 XN - 2013 XJ2 ​​-  2013 XM2 - 2013 XN2  (2013 YS) - 2013 XO2 - 2013 IH - 2013 YQ - 2013 YS  (2013 XN2)

Tuesday, December 22, 2009

My first discoveries, in 2009

Asteroid 2009 YW6 (333744)

The Minor Planet Center (MPC) has assigned on December 21, 2009 a new discovery. The asteroid 2009 YW6 (333744) was discovered in images taken on December 20 and confirmed by Antonio Garrigós (MPC B37) and the author in new observations the night after. 

Image of discovery. Note that the asteroid is on the edge of the field

Discovery of the Apollo PHA asteroid 2009 ST19

This minor planet, belonging to the Apollo class, is also flagged as a "Potentially Hazardous Asteroid (PHA)", an object that, because of its orbital parameters, might represent a possible threat of impact for planet Earth (

It has beeen discovered by the Spanish amateur astronomer Josep M. Bosch from Santa Maria de Montmagastrell (MPC B74) on 2009, Sept. 16.2, ay magnitude about 17. At that time it was posted on the NEOCP webpage of the Minor Planet Center as "jmbo11"; after a couple of days it was withdrawn, because it was not confirmed by any further observations.
On 2009, Sept. 22, the LINEAR sky survey picked-up a fast moving object, that was posted in the NEO-Cp as "BQ24981". After some follow-up observations from various sites, on 2009 Sept. 23 the MPC published M.P.E.C. 2009-S72 (, informing that the two objects mentioned before were actually the same celestial body.
According to the NEODyS webpage this object. about 1.5 Km in diameter, made a close pass to Earth on 1980, Oct. 4, at a minimum possible distance of about 0.009 AU (nominal distance of about 0.04 AU).

Diagram by Berndhard Häusler

Observatory Santa Maria On September 23th, at 10:00 pm. I went on a motorcycle to my observatory, located in a small village of 60 inhabitants called Santa Maria de Montmagastrell, 8 km far from my house. As I walked out of the fuel station, my mobile phone started to rang. At the time, I stopped the bike and went back to the side of the road, the phone stopped calling. Upon arrival at the observatory, the call repeated while preparing the telescope for another observation night. This time, I can answer the call phone. It was Gustavo Muller to communicate that the MPC have just provisionally designated the possible NEO I saw in some pictures taken last September 16. That past day, I had gotten up at three in the morning and, among other objectives, Comet 137P looked to no avail. Well, the comet was not in the 14 pictures I took of the field and so I went to other objectives that had to watch. At dawn, with the first light was fading I control systems and the telescope placed in sleep mode to close the observatory and go to bed to rest. At that time, I reviewed the images of the comet 137P field by the custom of not leaving any possibility loose. I started the blink of images and in less than a second I realized that there in the fourteen shots 70 seconds each moving something big. I checked that was not a known object, and then I sent four astrometric measurements to the MPC. Hours passed, spent six days, and when he had lost hope of recovering the object the MPC announced it had been found by various observatories, including the LINEAR and gave the provisional number 2009 ST19. I thought I had lost, although the night I had a discovery following email exchange with Tim Spahr of the MPC, who assured me find it. And they've found!

Richard Miles said:
Yes, Special congratulations, José María. This is a very special object. It breaks the record in terms of the closest pass by an object of this size, about 1 km across! 
We currently know of no object larger than this to have come closer than this object has recently. The next largest such object was the famous (69230) Hermes (H=17.5), which approached to 0.0050 AU of the Earth in 1937! Your PHA, 2009 ST19 will be visible during the next few weeks and so will be a good target for photometry.
Richard Miles
Asteroids and Remote Planets Section
British Astronomical Association

Orbit diagram update:;orb=1

I dedicate this discovery to the Departament d'Educació de la Generalitat de Catalunya and the educational community of Catalonia, to which I belong.

The best image of Asteroid Apollo 2009 ST19 by the discoverer on September 26, 2009

2009 ST19 in NEODyS
Number of crossings per revolution
                Venus Earth Mars Jupiter Saturn
Crossings    0        4       4       0        0
Close approaches from 1950 to 2100
Planet     Date                Min possible distance
EARTH 1980/07/13.15029 0.0097665
EARTH 2009/08/31.09278 0.0647428
EARTH 2038/09/22.26839 0.0104962
EARTH 2067/09/01.69748 0.0124637

List of Apollos:

Observations for all Near Earth Asteroids
Observations and residuals
NEODyS provides informationnd services for all Near Earth Asteroids from B74
The NEO Confirmation Page 

Monday, September 28, 2009

Test images

Galaxie NGC 4565 mit Vollmond, 16 Mai 2014
Sombrero Galaxy, March 15, 2012
Antenae, March 14, 2012
Horse nebula, January 4, 2012

Globular cluster Herschel H218-1, January, 4  2012
M1, january, 4  2012
Galaxy M33. Image on December 12, 2011

Planetary nebula M27. Image on December 12, 2011

NGC 6960, part of Veil Nebula. Images on September, 4  2011

Veil Nebula NGC 6992 & 6995. Images on June, 22  2012 by Pere Horts
Planetary Nebula NGC 6772 on June, 24 2012

Sunday, September 27, 2009

Observatory Santa Maria de Montmagastrell

Aerial view. Joan Guarro image

Telescopi principal

Secondary telescope (newton 31 cm f/4.9) (For sale)

Transit of Venus across the face of the Sun as Venus passed between the sun and Earth, September 8, 2004

M13  Image taken with the Newton telescope 31 cm diameter at f/5

M13   Image taken with the new telescope of 40 cm diameter (16") at f/10. Note that the stars are much more detailed and the resolution is much higher than f/6.3

Image of M15 and Planetary nebulae Pease 1 with telescope 16" at f/10.

M3 on May 16, 2014

a) 0.31-m f/4.9 Newtonian reflector

b) Meade advanced Ritchey-Chrétien 0.40-m f/10. Focal reducer at 6.3


Location: 41° 43' 12.54" N 1° 06' 19.27" E
Height above sea level 331 meters
B74-Santa Maria de Montmagastrell
Distance from rotation axis 0.747550 Earth radii
Height above equatorial plane +0.662053 Earth radii

Observations by observatory

See also:


Josep M. Bosch

Video from the Channel 33 of Televisió de Catalunya in which I appear (minutes 26 to 33) to accompany the professor Juan Antonio Belmonte, archaeoastrophysicist at the Instituto de Astrofísica de Canarias (IAC). Release on May 24, 2010

Ski station Portainé
With the Bororo women in Niger

My preferred reading is the medieval catalan literature           For example:

Book chapter 305 from the Llibre dels feits de Jaume I
E, en aquell temps que nós estàvem a Montpesller, venc-nos aquí lo comte de Tolosa, e el comte de Proença, e haguem grans corts d'hòmens honrats d'aquelles terres que ens venien veer. E açò fo un any aprés la presó de València. E entram en Montpesller el dijous: e el divendres, entre mig jorn e hora nona, fo eclipsis major que anc hom vis de memòria d'aquells hòmens que ara són, car tot lo Sol cobrí la Lluna, e podia hom veer bé set esteles en lo cel. E, ab aitant, quan nós haguem bé feites nostres fazendes en Montpesller, a bé e honrament de nós, faem armar lo bus de Montpesller qui era de vuitanta rems e venguem-nos en tro a Cotlliure; e per terra venguem-nos puis a València.

Author: king Jaume I d'Aragó

Wednesday, January 14, 2009

Light Pollution

Lleida under the light pollution. Image of José Manuel Pérez

Josep M. Bosch is a founding member of Cel Fosc Association Light Pollution ( and is currently on the staff manager of the entity.

Cel Fosc is a statewide association that studies the phenomenon of light pollution and coordinate actions to reduce their impact on the natural environment. Also to optimize energy resources applied to lighting at night, both public and private.
To contact the Cel Fosc association:



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