RECON: TNO occultation with 119979

Event between (119979) 02WC19 and star GA1100:02332352 with event index number of 1466799

Geocentric closest approach at 2025/11/15 05:53:02 UTC

J2000 position of star is 06:41:18.0 +21:16:14
Equinox of date position of star is 06:42:32.0 +21:14:59
Stellar brightness G=14.5, use SENSEUP=128
Star is 78 degrees from the moon. Moon is 21% illuminated.
TNO apparent brightness V=26.0

[RECON map]
TNO is 38.9 AU from the Sun and 38.2 AU from the Earth.
The TNO is moving 15.8 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 471 seconds.
The 1-sigma cross-track error in the shadow position is 1807 km.
The sky-plane scale is 27690.0 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=691.9 km assuming a 5% albedo -- 3.8 sec chord
Diameter=282.4 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 119979, (2025/11/15 05:53UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:54.0 +27:57:42  1.1 16.01  65
Alhena         06:39:12.4 +16:22:30  1.9  4.94  79
PPM 096308     06:40:38.6 +22:00:21  6.0  0.92  79
PPM 096360     06:42:15.2 +20:54:49  8.4  0.36  79
PPM 096388     06:43:20.8 +21:09:37  9.0  0.14  78
PPM 096381     06:43:06.7 +21:21:12 11.0  0.13  78
119979         06:42:50.8 +21:14:39 14.5        78
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 1.9 sigma about the mid-time.
The median site spacing is 18.8 km RECON observability=0.7 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Wildwood **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Patrick **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Yuma **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Calipatria **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Blythe **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Idyllwild **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Parker **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Lake Havasu City **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Mohave Valley **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
DCO **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Laughlin/Bullhead City **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Kingman/Dolan Springs **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
CPSLO **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Searchlight/Boulder City **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Henderson **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Indian Springs **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Beatty **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Bishop **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Lee Vining **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
George/Scottsdale **:00:00 0.0 Sun up Up 0.0 0.0 Not Up **:15:00 - **:45:00 -2147483648
Clarence Fulton 05:57:39 -52.1 Dark Down 25.3 86.6 Low 05:42:39 - 06:12:39 9849
Kelowna 05:57:41 -52.3 Dark Down 25.1 86.3 Low 05:42:41 - 06:12:41 9821
Peachland 05:57:42 -52.3 Dark Down 24.9 86.0 Low 05:42:42 - 06:12:42 9819
Victoria 05:57:51 -51.4 Dark Down 22.5 82.8 Low 05:42:51 - 06:12:51 9809
Summerland 05:57:42 -52.4 Dark Down 25.0 86.0 Low 05:42:42 - 06:12:42 9805
Penticton 05:57:43 -52.5 Dark Down 25.1 86.0 Low 05:42:43 - 06:12:43 9797
Oliver 05:57:43 -52.8 Dark Down 25.0 85.9 Low 05:42:43 - 06:12:43 9768
Anarchist Mountain Observatory 05:57:44 -53.0 Dark Down 25.2 85.9 Low 05:42:44 - 06:12:44 9749
Tonasket 05:57:46 -53.2 Dark Down 25.1 85.8 Low 05:42:46 - 06:12:46 9725
Okanogan 05:57:47 -53.4 Dark Down 25.0 85.5 Low 05:42:47 - 06:12:47 9701
Brewster 05:57:48 -53.5 Dark Down 24.8 85.2 Low 05:42:48 - 06:12:48 9684
Manson/Chelan 05:57:51 -53.4 Dark Down 24.6 84.9 Low 05:42:51 - 06:12:51 9676
Entiat 05:57:52 -53.6 Dark Down 24.5 84.7 Low 05:42:52 - 06:12:52 9659
Wenatchee 05:57:53 -53.7 Dark Down 24.4 84.5 Low 05:42:53 - 06:12:53 9640
Ellensburg 05:57:55 -53.9 Dark Down 24.2 84.2 Low 05:42:55 - 06:12:55 9611
Yakima 05:57:58 -54.1 Dark Down 24.2 84.0 Low 05:42:58 - 06:12:58 9577
Toppenish/White Swan 05:57:57 -54.4 Dark Down 24.3 84.0 Low 05:42:57 - 06:12:57 9555
Goldendale 05:58:01 -54.5 Dark Down 23.9 83.5 Low 05:43:01 - 06:13:01 9519
Pasco 05:57:56 -55.1 Dark Down 25.1 84.9 Low 05:42:56 - 06:12:56 9512
The Dalles 05:58:02 -54.5 Dark Down 23.7 83.2 Low 05:43:02 - 06:13:02 9509
PNWRO 05:57:58 -55.4 Dark Down 25.3 84.9 Low 05:42:58 - 06:12:58 9485
Maupin 05:58:04 -54.8 Dark Down 23.7 83.1 Low 05:43:04 - 06:13:04 9471
Sisters 05:58:09 -55.1 Dark Down 23.2 82.4 Low 05:43:09 - 06:13:09 9408
Redmond 05:58:09 -55.4 Dark Down 23.5 82.6 Low 05:43:09 - 06:13:09 9396
Bend 05:58:09 -55.4 Dark Down 23.4 82.4 Low 05:43:09 - 06:13:09 9381
Oregon Observatory 05:58:10 -55.4 Dark Down 23.3 82.3 Low 05:43:10 - 06:13:10 9370
La Pine/Gilchrist 05:58:11 -55.5 Dark Down 23.2 82.2 Low 05:43:11 - 06:13:11 9353
North Lake 05:58:13 -56.2 Dark Down 23.6 82.4 Low 05:43:13 - 06:13:13 9299
Paisley 05:58:13 -56.7 Dark Down 23.8 82.4 Low 05:43:13 - 06:13:13 9241
Klamath Falls 05:58:16 -56.3 Dark Down 22.8 81.4 Low 05:43:16 - 06:13:16 9233
Lakeview 05:58:15 -57.1 Dark Down 23.9 82.3 Low 05:43:15 - 06:13:15 9191
Cedarville 05:58:16 -57.6 Dark Down 23.9 82.1 Low 05:43:16 - 06:13:16 9127
Fall River/Burney 05:58:16 -57.2 Dark Down 22.9 81.1 Low 05:43:16 - 06:13:16 9118
Susanville 05:58:16 -58.0 Dark Down 23.4 81.3 Low 05:43:16 - 06:13:16 9041
Greenville 05:58:16 -58.0 Dark Down 23.1 81.0 Low 05:43:16 - 06:13:16 9025
Gimple 05:58:16 -58.0 Dark Down 23.2 81.1 Low 05:43:16 - 06:13:16 9022
Quincy 05:58:16 -58.1 Dark Down 23.1 80.9 Low 05:43:16 - 06:13:16 9006
Portola 05:58:16 -58.5 Dark Down 23.4 81.2 Low 05:43:16 - 06:13:16 8981
Reno 05:58:16 -59.0 Dark Down 23.9 81.4 Low 05:43:16 - 06:13:16 8939
Carson City 05:58:16 -59.2 Dark Down 23.8 81.3 Low 05:43:16 - 06:13:16 8905
Gardnerville 05:58:16 -59.4 Dark Down 23.8 81.2 Low 05:43:16 - 06:13:16 8882
Yerington 05:58:16 -59.8 Dark Down 24.3 81.6 Low 05:43:16 - 06:13:16 8869
Hawthorne 05:58:16 -60.4 Dark Down 24.6 81.7 Low 05:43:16 - 06:13:16 8812
Tonopah 05:58:16 -61.5 Dark Down 25.7 82.3 Low 05:43:16 - 06:13:16 8728
Niwot 05:57:53 -66.2 Dark Down 35.1 90.7 Up 05:42:53 - 06:12:53 8608
SwRI 05:57:54 -66.2 Dark Down 35.0 90.5 Up 05:42:54 - 06:12:54 8600

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 119979, (2025/11/15 05:53UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 16.01  65
Alhena         06:37:42.8 +16:23:57  1.9  4.94  79
PPM 096308     06:39:05.3 +22:01:51  6.0  0.92  79
PPM 096360     06:40:42.6 +20:56:23  8.4  0.36  79
PPM 096388     06:41:48.0 +21:11:13  9.0  0.14  78
PPM 096381     06:41:33.9 +21:22:47 11.0  0.13  78
119979         06:41:18.0 +21:16:14 14.5        78
Positions are for J2000

Event circumstances last updated at 2020/08/10 21:47:00 UT

Marc W. Buie, Southwest Research Institute

RECON