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 06:05:20.1 +32:00:13
Stellar brightness G=16.0, use SENSEUP=128
Star is 47 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=22.2

[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 2893 km.
The sky-plane scale is 12701.4 km/arcsec.

The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 4.7 sec chord
Diameter=31.0 km assuming a 30% albedo -- 1.9 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 22.1 km RECON observability=1.0 and success probability=15.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:31:21 -55.2 Dark Up 58.5 111.3 Up 08:16:21 - 08:46:21 -1204
Summerland 08:31:23 -55.5 Dark Up 58.4 110.5 Up 08:16:23 - 08:46:23 -1225
Penticton 08:31:22 -55.6 Dark Up 58.5 110.5 Up 08:16:22 - 08:46:22 -1234
Okanagan Falls 08:31:23 -55.8 Dark Up 58.6 110.2 Up 08:16:23 - 08:46:23 -1252
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
Oroville 08:31:24 -56.1 Dark Up 58.8 109.7 Up 08:16:24 - 08:46:24 -1295
Tonasket 08:31:25 -56.3 Dark Up 58.9 109.4 Up 08:16:25 - 08:46:25 -1317
Okanogan 08:31:27 -56.7 Dark Up 58.9 108.7 Up 08:16:27 - 08:46:27 -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 -1378
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 08:31:35 -58.6 Dark Up 58.8 104.9 Up 08:16:35 - 08:46:35 -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 -1561
Pasco 08:31:31 -58.5 Dark Up 59.9 105.8 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 -1573
George/Umatilla 08:31:33 -58.8 Dark Up 59.8 105.0 Up 08:16:33 - 08:46:33 -1590
PNWRO 08:31:31 -58.6 Dark Up 60.1 105.6 Up 08:16:31 - 08:46:31 -1594
Maupin 08:31:42 -60.0 Dark Up 58.8 102.1 Up 08:16:42 - 08:46:42 -1616
Madras/Culver 08:31:44 -60.5 Dark Up 58.9 101.2 Up 08:16:44 - 08:46:44 -1669
Sisters 08:31:47 -60.9 Dark Up 58.7 100.3 Up 08:16:47 - 08:46:47 -1689
Redmond 08:31:45 -60.9 Dark Up 58.9 100.6 Up 08:16:45 - 08:46:45 -1703
Bend 08:31:46 -61.1 Dark Up 58.9 100.1 Up 08:16:46 - 08:46:46 -1720
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 -1752
North Lake 08:31:47 -61.7 Dark Up 59.3 99.2 Up 08:16:47 - 08:46:47 -1812
Chiloquin 08:31:53 -62.6 Dark Up 58.7 97.2 Up 08:16:53 - 08:46:53 -1851
Paisley 08:31:47 -62.1 Dark Up 59.7 98.5 Up 08:16:47 - 08:46:47 -1877
Klamath Falls 08:31:54 -62.9 Dark Up 58.8 96.7 Up 08:16:54 - 08:46:54 -1888
Tulelake 08:31:53 -63.1 Dark Up 59.1 96.5 Up 08:16:53 - 08:46:53 -1923
Lakeview 08:31:48 -62.5 Dark Up 59.9 97.9 Up 08:16:48 - 08:46:48 -1933
Cedarville 08:31:49 -63.1 Dark Up 60.1 96.9 Up 08:16:49 - 08:46:49 -2004
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 -2102
Greenville 08:31:56 -64.6 Dark Up 59.7 93.9 Up 08:16:56 - 08:46:56 -2121
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 08:31:55 -64.7 Dark Up 60.0 93.7 Up 08:16:55 - 08:46:55 -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 -2396
Tonopah 08:31:46 -64.9 Dark Up 62.6 92.8 Up 08:16:46 - 08:46:46 -2441
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 -2515
SwRI 08:30:47 -57.2 Dark Up 71.2 108.6 Up 08:15:47 - 08:45:47 -2524
Lone Pine 08:31:54 -66.5 Dark Up 62.0 89.5 Up 08:16:54 - 08:46:54 -2567
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 65.3 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 -2827
Mohave Valley 08:31:42 -66.0 Dark Up 64.8 88.0 Up 08:16:42 - 08:46:42 -2843
DCO 08:31:34 -65.0 Dark Up 65.9 89.1 Up 08:16:34 - 08:46:34 -2860
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 08:31:45 -66.9 Dark Up 64.7 85.2 Up 08:16:45 - 08:46:45 -2977
Calipatria 08:31:50 -67.8 Dark Up 63.9 83.9 Up 08:16:50 - 08:46:50 -3002
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 2019/06/08 04:20:15 UT

Marc W. Buie, Southwest Research Institute

RECON