RECON: TNO occultation with 248835

Event between (248835) 06SX368 and star GA1200:02043279 with event index number of 1212272

Geocentric closest approach at 2023/01/01 10:55:28 UTC

J2000 position of star is 05:53:13.5 +31:42:47
Equinox of date position of star is 05:54:29.3 +31:42:57
Stellar brightness G=15.8, use SENSEUP=128
Star is 50 degrees from the moon. Moon is 74% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 18.3 AU from the Sun and 17.4 AU from the Earth.
The TNO is moving 24.5 km/sec on the sky relative to the star, or, 7.0 arcsec/hr.
The 1-sigma error in the time of the event is 152 seconds.
The 1-sigma cross-track error in the shadow position is 2636 km.
The sky-plane scale is 12593.9 km/arcsec.

The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 3.1 sec chord
Diameter=31.0 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 248835, (2023/01/01 10:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.6 +16:33:14  0.8 23.21  31
Alnath         05:27:44.9 +28:37:29  1.6  6.60  43
PPM 071002     05:56:28.6 +31:42:11  5.9  0.37  50
PPM 070923     05:52:55.7 +32:07:44  7.8  0.56  49
PPM 070966     05:54:50.7 +31:29:26  9.7  0.23  50
PPM 070949     05:54:00.5 +31:47:27 11.3  0.17  50
248835         05:54:43.2 +31:42:59 15.8        50
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 20.9 km RECON observability=1.0 and success probability=14.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 10:52:47 -47.1 Dark Up 44.9 268.2 Up 10:39:35 - 11:05:59 -1224
Summerland 10:52:47 -47.4 Dark Up 45.1 268.3 Up 10:39:35 - 11:05:59 -1259
Penticton 10:52:46 -47.4 Dark Up 45.0 268.4 Up 10:39:34 - 11:05:58 -1263
Okanagan Falls 10:52:46 -47.5 Dark Up 45.0 268.6 Up 10:39:34 - 11:05:58 -1283
Oliver 10:52:46 -47.5 Dark Down 45.0 268.8 Up 10:39:34 - 11:05:58 -1298
Anarchist Mountain Observatory 10:52:45 -47.5 Dark Down 44.9 269.1 Up 10:39:33 - 11:05:57 -1311
Oroville 10:52:45 -47.5 Dark Down 45.0 269.1 Up 10:39:33 - 11:05:57 -1320
Tonasket 10:52:44 -47.6 Dark Down 45.0 269.4 Up 10:39:32 - 11:05:56 -1343
Okanogan 10:52:44 -47.8 Dark Down 45.1 269.6 Up 10:39:32 - 11:05:56 -1380
Brewster 10:52:44 -48.1 Dark Down 45.2 269.7 Up 10:39:32 - 11:05:56 -1412
Manson/Chelan 10:52:44 -48.4 Dark Down 45.4 269.6 Up 10:39:32 - 11:05:56 -1441
Entiat 10:52:44 -48.5 Dark Down 45.5 269.8 Up 10:39:32 - 11:05:56 -1465
Wenatchee 10:52:44 -48.6 Dark Down 45.6 270.0 Up 10:39:32 - 11:05:56 -1493
Ellensburg 10:52:43 -48.9 Dark Down 45.7 270.3 Up 10:39:31 - 11:05:55 -1540
Yakima 10:52:43 -49.1 Dark Down 45.7 270.7 Up 10:39:31 - 11:05:55 -1581
Pasco 10:52:39 -48.3 Dark Down 44.7 272.0 Up 10:39:27 - 11:05:51 -1582
Toppenish/White Swan 10:52:42 -49.1 Dark Down 45.6 271.0 Up 10:39:30 - 11:05:54 -1599
PNWRO 10:52:38 -48.2 Dark Down 44.6 272.4 Up 10:39:26 - 11:05:50 -1601
George/Umatilla 10:52:39 -48.5 Dark Down 44.9 272.2 Up 10:39:27 - 11:05:51 -1621
Goldendale 10:52:41 -49.5 Dark Down 45.9 271.3 Up 10:39:29 - 11:05:53 -1666
The Dalles 10:52:42 -49.8 Dark Down 46.1 271.2 Up 10:39:30 - 11:05:54 -1697
Maupin 10:52:41 -49.9 Dark Down 46.1 271.8 Up 10:39:29 - 11:05:53 -1737
Niwot 10:52:03 -39.4 Dark Down 33.9 285.2 Up 10:38:51 - 11:05:15 -1782
Madras/Culver 10:52:40 -50.1 Dark Down 46.1 272.3 Up 10:39:28 - 11:05:52 -1794
SwRI 10:52:02 -39.5 Dark Down 33.9 285.2 Up 10:38:50 - 11:05:14 -1795
Redmond 10:52:40 -50.3 Dark Down 46.1 272.6 Up 10:39:28 - 11:05:52 -1832
Sisters 10:52:40 -50.5 Dark Down 46.4 272.3 Up 10:39:28 - 11:05:52 -1839
Bend 10:52:40 -50.4 Dark Down 46.2 272.8 Up 10:39:28 - 11:05:52 -1857
Oregon Observatory 10:52:39 -50.6 Dark Down 46.3 272.8 Up 10:39:27 - 11:05:51 -1878
La Pine/Gilchrist 10:52:39 -50.7 Dark Down 46.3 273.0 Up 10:39:27 - 11:05:51 -1901
North Lake 10:52:37 -50.4 Dark Down 45.8 273.9 Up 10:39:25 - 11:05:49 -1931
Paisley 10:52:35 -50.3 Dark Down 45.5 274.6 Up 10:39:23 - 11:05:47 -1980
Chiloquin 10:52:38 -51.3 Dark Down 46.5 274.0 Up 10:39:26 - 11:05:50 -2024
Lakeview 10:52:35 -50.3 Dark Down 45.4 275.3 Up 10:39:23 - 11:05:47 -2027
Klamath Falls 10:52:38 -51.3 Dark Down 46.4 274.4 Up 10:39:26 - 11:05:50 -2058
Tulelake 10:52:37 -51.2 Dark Down 46.2 274.8 Up 10:39:25 - 11:05:49 -2079
Cedarville 10:52:33 -50.4 Dark Down 45.2 276.0 Up 10:39:21 - 11:05:45 -2091
Fall River/Burney 10:52:35 -51.4 Dark Down 46.0 275.8 Up 10:39:23 - 11:05:47 -2172
Susanville 10:52:33 -51.0 Dark Down 45.4 276.9 Up 10:39:21 - 11:05:45 -2219
Gimple 10:52:32 -51.2 Dark Down 45.5 277.0 Up 10:39:20 - 11:05:44 -2253
Greenville 10:52:33 -51.3 Dark Down 45.6 277.0 Up 10:39:21 - 11:05:45 -2255
Quincy 10:52:32 -51.3 Dark Down 45.6 277.2 Up 10:39:20 - 11:05:44 -2276
Portola 10:52:31 -51.0 Dark Down 45.2 277.6 Up 10:39:19 - 11:05:43 -2277
Reno 10:52:29 -50.6 Dark Down 44.7 278.2 Up 10:39:17 - 11:05:41 -2288
Carson City 10:52:29 -50.6 Dark Down 44.6 278.5 Up 10:39:17 - 11:05:41 -2325
Yerington 10:52:27 -50.2 Dark Down 44.1 279.1 Up 10:39:15 - 11:05:39 -2328
Gardnerville 10:52:28 -50.7 Dark Down 44.5 278.8 Up 10:39:16 - 11:05:40 -2349
Hawthorne 10:52:25 -49.9 Dark Down 43.6 279.8 Up 10:39:13 - 11:05:37 -2362
Tonopah 10:52:21 -48.9 Dark Down 42.5 280.9 Up 10:39:09 - 11:05:33 -2371
Lee Vining 10:52:25 -50.4 Dark Down 43.9 280.1 Up 10:39:13 - 11:05:37 -2434
Bishop 10:52:23 -49.9 Dark Down 43.2 280.9 Up 10:39:11 - 11:05:35 -2477
Beatty 10:52:19 -48.7 Dark Down 41.9 282.1 Up 10:39:07 - 11:05:31 -2478
Indian Springs 10:52:16 -47.8 Dark Down 41.0 282.9 Up 10:39:04 - 11:05:28 -2480
Henderson 10:52:14 -47.3 Dark Down 40.3 283.6 Up 10:39:02 - 11:05:26 -2514
Patrick 10:52:10 -46.5 Dark Down 39.3 284.6 Up 10:38:58 - 11:05:22 -2544
Lone Pine 10:52:21 -49.7 Dark Down 42.8 281.8 Up 10:39:09 - 11:05:33 -2547
DCO 10:52:08 -45.9 Dark Down 38.7 285.1 Up 10:38:56 - 11:05:20 -2553
Searchlight/Boulder City 10:52:12 -47.3 Dark Down 40.1 284.1 Up 10:39:00 - 11:05:24 -2572
Kingman/Dolan Springs 10:52:10 -46.6 Dark Down 39.4 284.7 Up 10:38:58 - 11:05:22 -2573
Laughlin/Bullhead City 10:52:11 -47.1 Dark Down 39.8 284.5 Up 10:38:59 - 11:05:23 -2592
Mohave Valley 10:52:11 -47.1 Dark Down 39.7 284.7 Up 10:38:59 - 11:05:23 -2620
Lake Havasu City 10:52:10 -46.9 Dark Down 39.4 285.1 Up 10:38:58 - 11:05:22 -2653
Parker 10:52:09 -46.9 Dark Down 39.3 285.4 Up 10:38:57 - 11:05:21 -2689
Blythe 10:52:09 -47.2 Dark Down 39.4 285.7 Up 10:38:57 - 11:05:21 -2753
CPSLO 10:52:25 -52.0 Dark Down 44.6 281.9 Up 10:39:13 - 11:05:37 -2755
Idyllwild 10:52:14 -48.9 Dark Down 41.1 284.8 Up 10:39:02 - 11:05:26 -2806
Wildwood 10:52:19 -50.4 Dark Down 42.7 283.8 Up 10:39:07 - 11:05:31 -2825
Calipatria 10:52:11 -47.9 Dark Down 40.0 285.8 Up 10:38:59 - 11:05:23 -2833
Yuma 10:52:08 -47.2 Dark Down 39.2 286.4 Up 10:38:56 - 11:05:20 -2850

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, (2023/01/01 10:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 23.21  31
Alnath         05:26:17.5 +28:36:23  1.6  6.60  43
PPM 071002     05:54:58.9 +31:42:02  5.9  0.37  50
PPM 070923     05:51:25.7 +32:07:29  7.8  0.56  49
PPM 070966     05:53:21.2 +31:29:14  9.7  0.23  50
PPM 070949     05:52:30.8 +31:47:13 11.3  0.17  50
248835         05:53:13.5 +31:42:47 15.8        50
Positions are for J2000

Event circumstances last updated at 2019/06/08 04:33:58 UT

Marc W. Buie, Southwest Research Institute

RECON