RECON: TNO occultation with 341275

Event between (341275) 07RG283 and star GA1300:03633440 with event index number of 2200247

Geocentric closest approach at 2021/12/11 10:13:25 UTC

J2000 position of star is 06:46:29.4 +41:12:09
Equinox of date position of star is 06:48:01.6 +41:10:40
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 106 degrees from the moon. Moon is 54% illuminated.
TNO apparent brightness V=20.5

[RECON map]
TNO is 15.3 AU from the Sun and 14.4 AU from the Earth.
The TNO is moving 20.8 km/sec on the sky relative to the star, or, 7.2 arcsec/hr.
The 1-sigma error in the time of the event is 81 seconds.
The 1-sigma cross-track error in the shadow position is 1000 km.
The sky-plane scale is 10451.9 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=113.2 km assuming a 5% albedo -- 5.4 sec chord
Diameter=46.2 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 341275, (2021/12/11 10:13UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:39.4 +27:58:17  1.1 17.84 120
34Bet Aur      06:01:08.4 +44:56:50  1.9  9.35  97
58Psi7Aur      06:52:18.9 +41:45:12  6.0  0.99 107
PPM 049350     06:49:54.3 +41:16:34  8.4  0.37 106
PPM 049332     06:48:28.9 +41:09:19  9.1  0.09 106
341275         06:48:02.0 +41:10:39 16.0       106
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 5.0 sigma about the mid-time.
The median site spacing is 25.2 km RECON observability=1.0 and success probability=14.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 10:12:46 -51.2 Dark Down 77.4 228.9 Up 10:05:29 - 10:20:02 3256
Kelowna 10:12:46 -51.5 Dark Down 77.7 229.8 Up 10:05:30 - 10:20:03 3212
Peachland 10:12:47 -51.7 Dark Down 78.0 229.4 Up 10:05:30 - 10:20:03 3196
Summerland 10:12:46 -51.7 Dark Down 78.0 230.2 Up 10:05:30 - 10:20:03 3181
Penticton 10:12:46 -51.7 Dark Down 78.0 230.7 Up 10:05:30 - 10:20:03 3176
Oliver 10:12:46 -51.9 Dark Down 78.2 232.0 Up 10:05:29 - 10:20:02 3138
Anarchist Mountain Observatory 10:12:45 -51.9 Dark Down 78.2 233.2 Up 10:05:28 - 10:20:01 3123
Tonasket 10:12:45 -52.1 Dark Down 78.4 234.2 Up 10:05:28 - 10:20:01 3088
Okanogan 10:12:45 -52.3 Dark Down 78.7 235.2 Up 10:05:28 - 10:20:01 3050
Brewster 10:12:45 -52.6 Dark Down 79.0 235.8 Up 10:05:29 - 10:20:02 3018
Victoria 10:12:58 -54.4 Dark Down 80.5 222.7 Up 10:05:42 - 10:20:15 3015
Manson/Chelan 10:12:46 -52.9 Dark Down 79.3 235.7 Up 10:05:30 - 10:20:03 2990
Wenatchee 10:12:46 -53.2 Dark Down 79.7 237.4 Up 10:05:30 - 10:20:03 2936
Ellensburg 10:12:46 -53.6 Dark Down 80.0 238.7 Up 10:05:30 - 10:20:03 2888
Yakima 10:12:46 -53.8 Dark Down 80.2 240.7 Up 10:05:30 - 10:20:03 2843
Pasco 10:12:41 -53.1 Dark Down 79.5 245.9 Up 10:05:24 - 10:19:57 2829
Toppenish/White Swan 10:12:45 -53.8 Dark Down 80.2 242.2 Up 10:05:29 - 10:20:02 2823
PNWRO 10:12:39 -53.0 Dark Down 79.5 247.6 Up 10:05:23 - 10:19:56 2806
Goldendale 10:12:46 -54.3 Dark Down 80.7 244.1 Up 10:05:30 - 10:20:03 2756
The Dalles 10:12:47 -54.6 Dark Down 81.1 244.4 Up 10:05:31 - 10:20:04 2726
Maupin 10:12:46 -54.7 Dark Down 81.2 247.1 Up 10:05:30 - 10:20:03 2682
Redmond 10:12:46 -55.2 Dark Down 81.5 252.5 Up 10:05:29 - 10:20:02 2583
Sisters 10:12:47 -55.5 Dark Down 81.8 251.4 Up 10:05:31 - 10:20:04 2579
Bend 10:12:46 -55.4 Dark Down 81.7 253.6 Up 10:05:30 - 10:20:03 2557
Oregon Observatory 10:12:47 -55.6 Dark Down 81.8 254.4 Up 10:05:30 - 10:20:03 2536
La Pine/Gilchrist 10:12:46 -55.7 Dark Down 81.9 255.7 Up 10:05:30 - 10:20:03 2513
Dunrhomin 10:11:41 -45.2 Dark Down 70.0 281.4 Up 10:04:25 - 10:18:58 2512
North Lake 10:12:44 -55.5 Dark Down 81.6 259.7 Up 10:05:27 - 10:20:00 2475
Paisley 10:12:42 -55.5 Dark Down 81.4 263.8 Up 10:05:25 - 10:19:58 2421
Chiloquin 10:12:47 -56.4 Dark Down 82.4 263.1 Up 10:05:30 - 10:20:03 2387
Lakeview 10:12:40 -55.6 Dark Down 81.3 267.4 Up 10:05:24 - 10:19:57 2368
Klamath Falls 10:12:46 -56.5 Dark Down 82.4 265.7 Up 10:05:30 - 10:20:03 2350
Cedarville 10:12:39 -55.7 Dark Down 81.2 271.8 Up 10:05:23 - 10:19:56 2300
Fall River/Burney 10:12:44 -56.7 Dark Down 82.1 274.6 Up 10:05:27 - 10:20:00 2227
Susanville 10:12:40 -56.4 Dark Down 81.5 279.0 Up 10:05:23 - 10:19:56 2170
Gimple 10:12:40 -56.7 Dark Down 81.6 280.8 Up 10:05:24 - 10:19:57 2137
Greenville 10:12:41 -56.7 Dark Down 81.6 280.8 Up 10:05:24 - 10:19:57 2136
Quincy 10:12:41 -56.8 Dark Down 81.6 282.2 Up 10:05:24 - 10:19:57 2114
Portola 10:12:39 -56.5 Dark Down 81.2 282.8 Up 10:05:22 - 10:19:55 2108
Reno 10:12:36 -56.1 Dark Down 80.7 284.1 Up 10:05:19 - 10:19:52 2090
Carson City 10:12:35 -56.2 Dark Down 80.6 286.2 Up 10:05:19 - 10:19:52 2051
Yerington 10:12:33 -55.8 Dark Down 80.0 286.9 Up 10:05:16 - 10:19:49 2041
Gardnerville 10:12:35 -56.3 Dark Down 80.5 287.6 Up 10:05:18 - 10:19:51 2025
Hawthorne 10:12:30 -55.6 Dark Down 79.5 289.0 Up 10:05:13 - 10:19:46 2001
Tonopah 10:12:24 -54.6 Dark Down 78.3 290.2 Up 10:05:07 - 10:19:40 1977
Lee Vining 10:12:31 -56.1 Dark Down 79.7 292.3 Up 10:05:15 - 10:19:48 1930
Bishop 10:12:28 -55.7 Dark Down 78.9 294.4 Up 10:05:11 - 10:19:44 1879
Beatty 10:12:21 -54.6 Dark Down 77.6 294.9 Up 10:05:04 - 10:19:37 1862
Indian Springs 10:12:16 -53.8 Dark Down 76.7 295.2 Up 10:04:59 - 10:19:32 1850
Henderson 10:12:12 -53.3 Dark Down 75.9 296.6 Up 10:04:56 - 10:19:29 1808
Patrick 10:12:07 -52.6 Dark Down 74.8 297.8 Up 10:04:51 - 10:19:24 1766
Kingman/Dolan Springs 10:12:08 -52.7 Dark Down 74.9 298.7 Up 10:04:51 - 10:19:24 1738
Laughlin/Bullhead City 10:12:10 -53.2 Dark Down 75.2 299.2 Up 10:04:53 - 10:19:26 1724
Mohave Valley 10:12:09 -53.2 Dark Down 75.1 300.1 Up 10:04:53 - 10:19:26 1695
Lake Havasu City 10:12:08 -53.1 Dark Down 74.7 301.2 Up 10:04:51 - 10:19:24 1658
George/Scottsdale 10:11:57 -51.1 Dark Down 72.6 301.3 Up 10:04:40 - 10:19:13 1636
Parker 10:12:07 -53.1 Dark Down 74.5 302.2 Up 10:04:51 - 10:19:24 1621
CPSLO 10:12:35 -57.9 Dark Down 79.4 307.2 Up 10:05:18 - 10:19:51 1614
Blythe 10:12:08 -53.4 Dark Down 74.4 304.1 Up 10:04:51 - 10:19:24 1558
Idyllwild 10:12:17 -55.1 Dark Down 75.9 306.4 Up 10:05:00 - 10:19:33 1522
Wildwood 10:12:25 -56.6 Dark Down 77.4 308.1 Up 10:05:09 - 10:19:42 1522
Calipatria 10:12:11 -54.2 Dark Down 74.8 306.7 Up 10:04:55 - 10:19:28 1483
Yuma 10:12:07 -53.5 Dark Down 73.9 306.8 Up 10:04:51 - 10:19:24 1458

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 341275, (2021/12/11 10:13UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 17.84 120
34Bet Aur      05:59:31.6 +44:56:51  1.9  9.35  97
58Psi7Aur      06:50:45.9 +41:46:50  6.0  0.99 107
PPM 049350     06:48:21.7 +41:18:08  8.4  0.37 106
PPM 049332     06:46:56.3 +41:10:50  9.1  0.09 106
341275         06:46:29.4 +41:12:09 16.0       106
Positions are for J2000

Event circumstances last updated at 2021/11/02 00:37:44 UT

Marc W. Buie, Southwest Research Institute

RECON