RECON: TNO occultation with 148780

Event between (148780) Altjira and star GA1180:01278892 with event index number of 1378210

Geocentric closest approach at 2024/11/14 06:21:56 UTC

J2000 position of star is 05:14:29.3 +28:13:02
Equinox of date position of star is 05:15:56.1 +28:14:32
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 50 degrees from the moon. Moon is 96% illuminated.
Apparent brightness V=22.5

[RECON map]
Object is 46.2 AU from the Sun and 45.3 AU from the Earth.
Apparent velocity is 22.5 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 518 seconds.
The 1-sigma cross-track error in the shadow position is 2471 km.
The sky-plane scale is 32880.4 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=416.9 km assuming a 5% albedo -- 18.9 sec chord
Diameter=170.2 km assuming a 30% albedo -- 7.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 148780, (2024/11/14 06:22UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.0 +16:33:27  0.8 14.70  41
Alnath         05:27:52.0 +28:37:34  1.6  2.62  53
PPM 094294     05:22:33.2 +27:58:48  6.3  1.46  52
PPM 094235     05:18:50.0 +28:55:48  7.4  0.92  51
PPM 094186     05:15:31.0 +28:15:05  9.6  0.12  50
148780         05:16:03.3 +28:14:39 16.7        51
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 1.7 sigma about the mid-time.
The median site spacing is 27.5 km RECON observability=1.0 and success probability=12.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:24:10 -53.8 Dark Up 47.0 102.4 Up 06:09:10 - 06:39:10 -2684
Kelowna 06:24:10 -54.8 Dark Up 47.7 102.4 Up 06:09:10 - 06:39:10 -2780
Peachland 06:24:11 -54.8 Dark Up 47.6 102.0 Up 06:09:11 - 06:39:11 -2782
Victoria 06:24:22 -54.4 Dark Up 45.5 97.6 Up 06:09:22 - 06:39:22 -2791
Summerland 06:24:11 -55.0 Dark Up 47.7 101.9 Up 06:09:11 - 06:39:11 -2797
Penticton 06:24:11 -55.1 Dark Up 47.8 102.0 Up 06:09:11 - 06:39:11 -2806
Oliver 06:24:13 -55.4 Dark Up 47.8 101.6 Up 06:09:13 - 06:39:13 -2838
Anarchist Mountain Observatory 06:24:12 -55.6 Dark Up 48.0 101.6 Up 06:09:12 - 06:39:12 -2858
Sleaford 06:23:34 -55.9 Dark Up 54.8 119.1 Up 06:08:34 - 06:38:34 -2886
Okanogan 06:24:14 -56.0 Dark Up 48.0 100.7 Up 06:09:14 - 06:39:14 -2911
Brewster 06:24:16 -56.2 Dark Up 47.9 100.2 Up 06:09:16 - 06:39:16 -2930
Manson/Chelan 06:24:17 -56.2 Dark Up 47.7 99.7 Up 06:09:17 - 06:39:17 -2938
Wenatchee 06:24:19 -56.5 Dark Up 47.7 99.0 Up 06:09:19 - 06:39:19 -2977
Ellensburg 06:24:20 -56.8 Dark Up 47.6 98.4 Up 06:09:20 - 06:39:20 -3008
Yakima 06:24:21 -57.1 Dark Up 47.6 97.9 Up 06:09:21 - 06:39:21 -3045
Toppenish/White Swan 06:24:22 -57.3 Dark Up 47.8 97.8 Up 06:09:22 - 06:39:22 -3069
The Dalles 06:24:25 -57.6 Dark Up 47.3 96.4 Up 06:09:25 - 06:39:25 -3118
PNWRO 06:24:19 -58.2 Dark Up 48.8 98.7 Up 06:09:19 - 06:39:19 -3145
Maupin 06:24:26 -58.0 Dark Up 47.5 96.0 Up 06:09:26 - 06:39:26 -3159
Sisters 06:24:30 -58.4 Dark Up 47.2 94.7 Up 06:09:30 - 06:39:30 -3226
Bend 06:24:30 -58.7 Dark Up 47.4 94.6 Up 06:09:30 - 06:39:30 -3256
Oregon Observatory 06:24:31 -58.8 Dark Up 47.3 94.3 Up 06:09:31 - 06:39:31 -3268
Chiloquin 06:24:35 -59.5 Dark Up 47.1 92.6 Up 06:09:35 - 06:39:35 -3378
Klamath Falls 06:24:36 -59.8 Dark Up 47.2 92.3 Up 06:09:36 - 06:39:36 -3413
Cedarville 06:24:34 -61.2 Dark Up 48.4 92.7 Up 06:09:34 - 06:39:34 -3528
Fall River/Burney 06:24:38 -60.9 Dark Up 47.5 91.3 Up 06:09:38 - 06:39:38 -3537
Greenville 06:24:39 -61.8 Dark Up 47.9 90.6 Up 06:09:39 - 06:39:39 -3637
Gimple 06:24:39 -61.8 Dark Up 47.9 90.7 Up 06:09:39 - 06:39:39 -3640
Quincy 06:24:39 -61.9 Dark Up 47.9 90.4 Up 06:09:39 - 06:39:39 -3657
Portola 06:24:38 -62.2 Dark Up 48.3 90.5 Up 06:09:38 - 06:39:38 -3684
Reno 06:24:38 -62.8 Dark Up 48.8 90.7 Up 06:09:38 - 06:39:38 -3730
Carson City 06:24:38 -63.1 Dark Up 48.8 90.3 Up 06:09:38 - 06:39:38 -3766
Gardnerville 06:24:39 -63.3 Dark Up 48.8 90.0 Up 06:09:39 - 06:39:39 -3791
Yerington 06:24:38 -63.5 Dark Up 49.3 90.4 Up 06:09:38 - 06:39:38 -3804
Hawthorne 06:24:37 -64.2 Dark Up 49.7 90.2 Up 06:09:37 - 06:39:37 -3866
Lee Vining 06:24:40 -64.3 Dark Up 49.3 89.3 Up 06:09:40 - 06:39:40 -3906
Bishop 06:24:39 -65.1 Dark Up 49.9 89.0 Up 06:09:39 - 06:39:39 -3988
Dunrhomin 06:23:56 -67.6 Dark Up 59.7 102.8 Up 06:08:56 - 06:38:56 -4064
Nikitin 06:23:56 -67.8 Dark Up 59.7 102.4 Up 06:08:56 - 06:38:56 -4082
Beatty 06:24:36 -66.4 Dark Up 51.2 89.4 Up 06:09:36 - 06:39:36 -4085
CU-SBO 06:23:56 -67.9 Dark Up 59.7 102.3 Up 06:08:56 - 06:38:56 -4087
Wildwood 06:24:47 -67.2 Dark Up 49.6 85.1 Up 06:09:47 - 06:39:47 -4307
Patrick 06:24:31 -69.0 Dark Up 53.5 89.1 Up 06:09:31 - 06:39:31 -4323
Laughlin/Bullhead City 06:24:33 -68.8 Dark Up 52.9 88.4 Up 06:09:33 - 06:39:33 -4327
Lake Havasu City 06:24:34 -69.5 Dark Up 53.1 87.7 Up 06:09:34 - 06:39:34 -4403
Idyllwild 06:24:42 -68.6 Dark Up 51.1 85.5 Up 06:09:42 - 06:39:42 -4405
Calipatria 06:24:40 -69.8 Dark Up 52.0 85.3 Up 06:09:40 - 06:39:40 -4505
George/Scottsdale 06:24:28 -71.4 Dark Up 55.1 87.9 Up 06:09:28 - 06:39:28 -4557
Yuma 06:24:38 -70.6 Dark Up 52.7 85.2 Up 06:09:38 - 06:39:38 -4577

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 148780, (2024/11/14 06:22UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 14.70  41
Alnath         05:26:17.6 +28:36:23  1.6  2.62  53
PPM 094294     05:20:59.3 +27:57:25  6.3  1.46  52
PPM 094235     05:17:15.5 +28:54:17  7.4  0.92  51
PPM 094186     05:13:57.0 +28:13:27  9.6  0.12  50
148780         05:14:29.3 +28:13:02 16.7        50
Positions are for J2000

Event circumstances last updated at 2022/12/24 04:08:27 UT

Marc W. Buie, Southwest Research Institute

RECON