RECON: TNO occultation with 01KG76

Event between 01KG76 and star GA0660:19176848 with event index number of 1263446

Geocentric closest approach at 2023/07/25 04:32:49 UTC

J2000 position of star is 17:46:52.1 -23:10:31
Equinox of date position of star is 17:48:17.1 -23:10:56
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 63 degrees from the moon. Moon is 43% illuminated.
Apparent brightness V=23.5

[RECON map]
Object is 50.8 AU from the Sun and 50.0 AU from the Earth.
Apparent velocity is 20.0 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 1976 seconds.
The 1-sigma cross-track error in the shadow position is 3257 km.
The sky-plane scale is 36253.6 km/arcsec.

The object has an absolute magnitude Hv=6.4
Diameter=311.9 km assuming a 5% albedo -- 15.6 sec chord
Diameter=127.3 km assuming a 30% albedo -- 6.4 sec chord
Dynamical classification is 9:4EEEEE
 
 
 
 
 
 

Star training set for 01KG76, (2023/07/25 04:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.4 -26:28:56  0.9 17.86  46
35Eta Oph      17:11:43.9 -15:45:09  2.6 11.37  55
PPM 267309     17:49:11.1 -22:29:04  6.1  0.73  64
PPM 267328     17:49:48.5 -23:14:20  8.3  0.35  64
PPM 267313     17:49:17.0 -22:58:41  9.1  0.30  64
01KG76         17:48:18.0 -23:10:56 16.9        64
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 0.5 sigma about the mid-time.
The median site spacing is 28.8 km RECON observability=0.3 and success probability=0.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:32:59 -10.5 NT Up 14.7 178.3 Really Low 04:17:59 - 04:47:59 8210
Kamloops 04:33:48 -5.4 CT Up 14.8 164.8 Really Low 04:18:48 - 04:48:48 8093
Kelowna 04:33:47 -6.3 NT Up 15.7 165.6 Really Low 04:18:47 - 04:48:47 8074
Peachland 04:33:47 -6.3 NT Up 15.8 165.3 Really Low 04:18:47 - 04:48:47 8068
Summerland 04:33:48 -6.4 NT Up 16.0 165.4 Really Low 04:18:48 - 04:48:48 8063
Penticton 04:33:47 -6.5 NT Up 16.0 165.5 Really Low 04:18:47 - 04:48:47 8062
Oliver 04:33:48 -6.7 NT Up 16.4 165.5 Really Low 04:18:48 - 04:48:48 8049
Anarchist Mountain Observatory 04:33:47 -6.9 NT Up 16.6 165.6 Really Low 04:18:47 - 04:48:47 8046
Okanogan 04:33:49 -7.3 NT Up 17.2 165.4 Really Low 04:18:49 - 04:48:49 8020
Brewster 04:33:49 -7.3 NT Up 17.4 165.2 Really Low 04:18:49 - 04:48:49 8008
Manson/Chelan 04:33:51 -7.3 NT Up 17.5 164.8 Really Low 04:18:51 - 04:48:51 7997
Victoria 04:33:58 -5.2 CT Up 16.3 161.8 Really Low 04:18:58 - 04:48:58 7990
Wenatchee 04:33:52 -7.5 NT Up 18.0 164.6 Really Low 04:18:52 - 04:48:52 7978
Ellensburg 04:33:53 -7.7 NT Up 18.3 164.4 Really Low 04:18:53 - 04:48:53 7960
Yakima 04:33:54 -7.9 NT Up 18.7 164.3 Really Low 04:18:54 - 04:48:54 7943
Toppenish/White Swan 04:33:54 -8.1 NT Up 19.0 164.5 Really Low 04:18:54 - 04:48:54 7936
PNWRO 04:33:49 -9.2 NT Up 19.6 165.8 Really Low 04:18:49 - 04:48:49 7935
The Dalles 04:33:58 -8.2 NT Up 19.6 163.6 Really Low 04:18:58 - 04:48:58 7896
Maupin 04:33:58 -8.6 NT Up 20.0 163.7 Really Low 04:18:58 - 04:48:58 7880
Sisters 04:33:58 -8.8 NT Up 20.7 163.1 Low 04:18:58 - 04:48:58 7838
Bend 04:33:58 -9.1 NT Up 21.0 163.4 Low 04:18:58 - 04:48:58 7830
Oregon Observatory 04:33:58 -9.2 NT Up 21.1 163.2 Low 04:18:58 - 04:48:58 7821
Chiloquin 04:33:58 -9.8 NT Up 22.3 162.7 Low 04:18:58 - 04:48:58 7756
Dunrhomin 04:32:58 -20.1 Dark Up 26.6 179.0 Low 04:17:58 - 04:47:58 7749
Klamath Falls 04:33:58 -10.0 NT Up 22.7 162.7 Low 04:18:58 - 04:48:58 7741
Nikitin 04:32:59 -20.2 Dark Up 26.7 178.9 Low 04:17:59 - 04:47:59 7740
CU-SBO 04:32:58 -20.3 Dark Up 26.8 178.9 Low 04:17:58 - 04:47:58 7737
Cedarville 04:33:58 -11.4 NT Up 23.7 164.2 Low 04:18:58 - 04:48:58 7723
Fall River/Burney 04:33:58 -11.0 NT Up 23.9 162.9 Low 04:18:58 - 04:48:58 7687
Gimple 04:33:58 -11.9 NT Up 24.9 163.3 Low 04:18:58 - 04:48:58 7647
Greenville 04:33:58 -11.8 NT Up 24.8 163.2 Low 04:18:58 - 04:48:58 7646
Quincy 04:33:58 -11.9 NT Up 25.0 163.2 Low 04:18:58 - 04:48:58 7636
Portola 04:33:58 -12.3 AT Up 25.3 163.7 Low 04:18:58 - 04:48:58 7634
Reno 04:33:58 -12.9 AT Up 25.6 164.3 Low 04:18:58 - 04:48:58 7627
Carson City 04:33:58 -13.1 AT Up 26.0 164.3 Low 04:18:58 - 04:48:58 7608
Yerington 04:33:56 -13.6 AT Up 26.3 164.9 Low 04:18:56 - 04:48:56 7604
Gardnerville 04:33:58 -13.3 AT Up 26.2 164.3 Low 04:18:58 - 04:48:58 7596
Hawthorne 04:33:54 -14.2 AT Up 26.9 165.3 Low 04:18:54 - 04:48:54 7584
Lee Vining 04:33:57 -14.3 AT Up 27.3 164.8 Low 04:18:57 - 04:48:57 7550
Bishop 04:33:54 -15.1 AT Up 28.0 165.4 Low 04:18:54 - 04:48:54 7523
Beatty 04:33:48 -16.4 AT Up 28.8 167.0 Low 04:18:48 - 04:48:48 7512
Patrick 04:33:36 -19.1 Dark Up 30.7 169.8 Up 04:18:36 - 04:48:36 7449
Laughlin/Bullhead City 04:33:39 -18.8 Dark Up 30.9 169.0 Up 04:18:39 - 04:48:39 7429
Lake Havasu City 04:33:39 -19.4 Dark Up 31.6 169.2 Up 04:18:39 - 04:48:39 7391
George/Scottsdale 04:33:29 -21.4 Dark Up 32.7 171.7 Up 04:18:29 - 04:48:29 7361
Wildwood 04:33:57 -17.1 AT Up 31.2 164.7 Up 04:18:57 - 04:48:57 7330
Idyllwild 04:33:49 -18.5 Dark Up 31.9 166.6 Up 04:18:49 - 04:48:49 7327
Calipatria 04:33:45 -19.6 Dark Up 32.7 167.8 Up 04:18:45 - 04:48:45 7298
Yuma 04:33:41 -20.5 Dark Up 33.3 168.7 Up 04:18:41 - 04:48:41 7278

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 01KG76, (2023/07/25 04:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.86  46
35Eta Oph      17:10:22.7 -15:43:29  2.6 11.37  55
PPM 267309     17:47:45.6 -22:28:40  6.1  0.73  64
PPM 267328     17:48:22.6 -23:13:58  8.3  0.35  64
PPM 267313     17:47:51.2 -22:58:18  9.1  0.30  64
01KG76         17:46:52.1 -23:10:31 16.9        63
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:30:23 UT

Marc W. Buie, Southwest Research Institute

RECON