RECON: TNO occultation with 248835

Event between (248835) 06SX368 and star GA1220:02444686 with event index number of 1212247

Geocentric closest approach at 2022/11/08 08:28:59 UTC

J2000 position of star is 06:04:04.1 +32:00:21
Equinox of date position of star is 06:05:23.1 +32:00:12
Stellar brightness G=16.0, use SENSEUP=128
Star is 47 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 18.2 AU from the Sun and 17.5 AU from the Earth.
The TNO is moving 16.0 km/sec on the sky relative to the star, or, 4.5 arcsec/hr.
The 1-sigma error in the time of the event is 239 seconds.
The 1-sigma cross-track error in the shadow position is 2894 km.
The sky-plane scale is 12701.4 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=75.9 km assuming a 5% albedo -- 3.8 sec chord
Diameter=31.0 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 248835, (2022/11/08 08:29UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:42.8 +27:58:09  1.1 22.22  69
Alnath         05:27:44.3 +28:37:29  1.6  8.83  38
PPM 071108     06:02:38.6 +31:02:00  6.0  1.15  46
PPM 071151     06:04:50.5 +31:23:17  7.5  0.63  47
PPM 071149     06:04:47.3 +32:02:38  9.5  0.17  47
248835         06:05:33.4 +32:00:11 16.0        47
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 3.8 sigma about the mid-time.
The median site spacing is 25.6 km RECON observability=1.0 and success probability=16.1%
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 08:31:19 -54.9 Dark Up 58.4 111.9 Up 08:16:19 - 08:46:19 -1172
Kelowna 08:31:21 -55.3 Dark Up 58.5 111.1 Up 08:16:21 - 08:46:21 -1205
Peachland 08:31:23 -55.4 Dark Up 58.3 110.6 Up 08:16:23 - 08:46:23 -1208
Summerland 08:31:23 -55.5 Dark Up 58.4 110.5 Up 08:16:23 - 08:46:23 -1225
Victoria 08:31:39 -57.3 Dark Up 56.5 105.0 Up 08:16:39 - 08:46:39 -1231
Penticton 08:31:22 -55.6 Dark Up 58.5 110.5 Up 08:16:22 - 08:46:22 -1234
Oliver 08:31:24 -55.9 Dark Up 58.6 110.0 Up 08:16:24 - 08:46:24 -1268
Anarchist Mountain Observatory 08:31:23 -56.0 Dark Up 58.8 109.9 Up 08:16:23 - 08:46:23 -1289
Tonasket 08:31:25 -56.3 Dark Up 58.9 109.4 Up 08:16:25 - 08:46:25 -1317
Okanogan 08:31:26 -56.7 Dark Up 58.9 108.7 Up 08:16:26 - 08:46:26 -1346
Brewster 08:31:28 -57.0 Dark Up 58.9 108.1 Up 08:16:28 - 08:46:28 -1367
Manson/Chelan 08:31:30 -57.2 Dark Up 58.7 107.3 Up 08:16:30 - 08:46:30 -1377
Entiat 08:31:31 -57.5 Dark Up 58.7 106.9 Up 08:16:31 - 08:46:31 -1397
Wenatchee 08:31:32 -57.7 Dark Up 58.7 106.4 Up 08:16:32 - 08:46:32 -1419
Ellensburg 08:31:34 -58.2 Dark Up 58.7 105.6 Up 08:16:34 - 08:46:34 -1453
Yakima 08:31:36 -58.6 Dark Up 58.8 104.9 Up 08:16:36 - 08:46:36 -1492
Toppenish/White Swan 08:31:36 -58.7 Dark Up 59.0 104.7 Up 08:16:36 - 08:46:36 -1518
Goldendale 08:31:39 -59.3 Dark Up 58.8 103.4 Up 08:16:39 - 08:46:39 -1560
Pasco 08:31:31 -58.5 Dark Up 59.8 105.8 Up 08:16:31 - 08:46:31 -1563
The Dalles 08:31:41 -59.6 Dark Up 58.6 102.7 Up 08:16:41 - 08:46:41 -1572
PNWRO 08:31:31 -58.6 Dark Up 60.1 105.6 Up 08:16:31 - 08:46:31 -1593
Maupin 08:31:42 -60.0 Dark Up 58.8 102.1 Up 08:16:42 - 08:46:42 -1616
Sisters 08:31:47 -60.9 Dark Up 58.7 100.3 Up 08:16:47 - 08:46:47 -1689
Redmond 08:31:46 -60.9 Dark Up 58.9 100.6 Up 08:16:46 - 08:46:46 -1702
Bend 08:31:46 -61.1 Dark Up 58.9 100.1 Up 08:16:46 - 08:46:46 -1719
Oregon Observatory 08:31:47 -61.3 Dark Up 58.8 99.7 Up 08:16:47 - 08:46:47 -1733
La Pine/Gilchrist 08:31:48 -61.5 Dark Up 58.8 99.3 Up 08:16:48 - 08:46:48 -1751
North Lake 08:31:47 -61.7 Dark Up 59.3 99.2 Up 08:16:47 - 08:46:47 -1811
Paisley 08:31:47 -62.1 Dark Up 59.7 98.5 Up 08:16:47 - 08:46:47 -1876
Klamath Falls 08:31:54 -62.9 Dark Up 58.8 96.7 Up 08:16:54 - 08:46:54 -1887
Lakeview 08:31:48 -62.5 Dark Up 59.9 97.9 Up 08:16:48 - 08:46:48 -1932
Cedarville 08:31:49 -63.1 Dark Up 60.1 96.9 Up 08:16:49 - 08:46:49 -2003
Fall River/Burney 08:31:56 -63.9 Dark Up 59.2 95.1 Up 08:16:56 - 08:46:56 -2016
Susanville 08:31:55 -64.2 Dark Up 59.9 94.6 Up 08:16:55 - 08:46:55 -2101
Greenville 08:31:57 -64.6 Dark Up 59.7 93.9 Up 08:16:57 - 08:46:57 -2120
Gimple 08:31:56 -64.5 Dark Up 59.7 94.0 Up 08:16:56 - 08:46:56 -2123
Quincy 08:31:57 -64.7 Dark Up 59.7 93.6 Up 08:16:57 - 08:46:57 -2141
Portola 08:31:56 -64.7 Dark Up 60.0 93.7 Up 08:16:56 - 08:46:56 -2168
Reno 08:31:53 -64.7 Dark Up 60.6 93.7 Up 08:16:53 - 08:46:53 -2214
Carson City 08:31:54 -65.0 Dark Up 60.6 93.1 Up 08:16:54 - 08:46:54 -2251
Gardnerville 08:31:55 -65.2 Dark Up 60.6 92.7 Up 08:16:55 - 08:46:55 -2277
Yerington 08:31:52 -64.9 Dark Up 61.1 93.2 Up 08:16:52 - 08:46:52 -2289
Hawthorne 08:31:51 -65.1 Dark Up 61.5 92.7 Up 08:16:51 - 08:46:51 -2352
Lee Vining 08:31:55 -65.8 Dark Up 61.2 91.3 Up 08:16:55 - 08:46:55 -2395
Tonopah 08:31:46 -64.9 Dark Up 62.6 92.8 Up 08:16:46 - 08:46:46 -2440
Bishop 08:31:53 -66.0 Dark Up 61.8 90.7 Up 08:16:53 - 08:46:53 -2478
Niwot 08:30:46 -57.1 Dark Up 71.3 109.0 Up 08:15:46 - 08:45:46 -2514
SwRI 08:30:47 -57.2 Dark Up 71.2 108.6 Up 08:15:47 - 08:45:47 -2524
Beatty 08:31:47 -65.6 Dark Up 63.0 90.8 Up 08:16:47 - 08:46:47 -2573
CPSLO 08:32:08 -68.7 Dark Up 59.9 85.8 Up 08:17:08 - 08:47:08 -2621
Indian Springs 08:31:43 -65.3 Dark Up 63.9 90.8 Up 08:16:43 - 08:46:43 -2637
Henderson 08:31:41 -65.4 Dark Up 64.5 90.1 Up 08:16:41 - 08:46:41 -2712
Searchlight/Boulder City 08:31:42 -65.8 Dark Up 64.5 89.0 Up 08:16:42 - 08:46:42 -2774
Patrick 08:31:37 -65.2 Dark Up 65.4 89.4 Up 08:16:37 - 08:46:37 -2808
Wildwood 08:32:02 -68.7 Dark Up 61.5 84.6 Up 08:17:02 - 08:47:02 -2810
Laughlin/Bullhead City 08:31:41 -65.8 Dark Up 64.8 88.5 Up 08:16:41 - 08:46:41 -2815
Kingman/Dolan Springs 08:31:39 -65.5 Dark Up 65.2 88.9 Up 08:16:39 - 08:46:39 -2826
Mohave Valley 08:31:42 -66.0 Dark Up 64.8 88.0 Up 08:16:42 - 08:46:42 -2843
DCO 08:31:35 -65.0 Dark Up 65.9 89.1 Up 08:16:35 - 08:46:35 -2859
Lake Havasu City 08:31:41 -66.1 Dark Up 65.0 87.2 Up 08:16:41 - 08:46:41 -2892
Idyllwild 08:31:54 -68.0 Dark Up 63.0 84.6 Up 08:16:54 - 08:46:54 -2904
Parker 08:31:42 -66.3 Dark Up 65.0 86.5 Up 08:16:42 - 08:46:42 -2930
Blythe 08:31:44 -66.9 Dark Up 64.7 85.2 Up 08:16:44 - 08:46:44 -2977
Calipatria 08:31:50 -67.8 Dark Up 63.9 83.9 Up 08:16:50 - 08:46:50 -3002
George/Scottsdale 08:31:31 -65.1 Dark Up 66.9 86.6 Up 08:16:31 - 08:46:31 -3041
Yuma 08:31:47 -67.5 Dark Up 64.6 83.3 Up 08:16:47 - 08:46:47 -3073

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 248835, (2022/11/08 08:29UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 22.22  69
Alnath         05:26:17.5 +28:36:23  1.6  8.83  38
PPM 071108     06:01:10.0 +31:02:04  6.0  1.15  46
PPM 071151     06:03:21.6 +31:23:25  7.5  0.63  47
PPM 071149     06:03:17.9 +32:02:46  9.5  0.17  47
248835         06:04:04.1 +32:00:21 16.0        47
Positions are for J2000

Event circumstances last updated at 2020/03/19 20:27:56 UT

Marc W. Buie, Southwest Research Institute

RECON