RECON: TNO occultation with 248835

Event between (248835) 06SX368 and star GA1260:01762191 with event index number of 1025501

Geocentric closest approach at 2021/01/03 13:14:45 UTC

J2000 position of star is 05:10:05.1 +37:07:17
Equinox of date position of star is 05:11:30.3 +37:08:46
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 76 degrees from the moon. Moon is 80% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 16.9 AU from the Sun and 16.1 AU from the Earth.
The TNO is moving 22.8 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 26 seconds.
The 1-sigma cross-track error in the shadow position is 582 km.
The sky-plane scale is 11646.4 km/arcsec.

The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 3.3 sec chord
Diameter=31.0 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 248835, (2021/01/03 13:15UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.7 +16:32:59  0.8 21.95  88
3Iot Aur       04:58:21.9 +33:11:51  2.7  4.77  79
PPM 070048     05:14:42.8 +37:21:36  6.5  0.67  76
PPM 069986     05:11:21.7 +37:01:46  8.3  0.12  76
248835         05:11:30.4 +37:08:46 15.1        76
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 0.0 km RECON observability=0.0 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)
Dunrhomin 13:10:30 -13.5 AT Up 5.8 315.1 Really Low 13:07:52 - 13:13:08 2586
Clarence Fulton 13:10:47 -25.3 Dark Up 19.8 304.8 Really Low 13:08:09 - 13:13:25 2565
Kelowna 13:10:46 -25.4 Dark Up 19.6 304.8 Really Low 13:08:08 - 13:13:24 2529
Peachland 13:10:46 -25.6 Dark Up 19.7 304.6 Really Low 13:08:08 - 13:13:24 2507
Penticton 13:10:45 -25.4 Dark Up 19.5 304.8 Really Low 13:08:07 - 13:13:23 2501
Summerland 13:10:45 -25.5 Dark Up 19.6 304.7 Really Low 13:08:07 - 13:13:23 2500
Oliver 13:10:44 -25.4 Dark Up 19.3 304.9 Really Low 13:08:06 - 13:13:22 2474
Anarchist Mountain Observatory 13:10:44 -25.2 Dark Up 19.1 305.1 Really Low 13:08:06 - 13:13:22 2471
Tonasket 13:10:43 -25.3 Dark Up 19.0 305.1 Really Low 13:08:05 - 13:13:21 2444
Okanogan 13:10:42 -25.3 Dark Up 18.9 305.1 Really Low 13:08:04 - 13:13:20 2412
Brewster 13:10:41 -25.4 Dark Up 18.8 305.1 Really Low 13:08:03 - 13:13:19 2382
Manson/Chelan 13:10:41 -25.6 Dark Up 18.9 304.9 Really Low 13:08:03 - 13:13:19 2348
Wenatchee 13:10:40 -25.7 Dark Up 18.7 304.9 Really Low 13:08:02 - 13:13:18 2304
Pasco 13:10:37 -24.8 Dark Up 17.4 306.0 Really Low 13:07:59 - 13:13:15 2273
PNWRO 13:10:37 -24.6 Dark Up 17.1 306.2 Really Low 13:07:59 - 13:13:15 2266
Ellensburg 13:10:39 -25.8 Dark Up 18.6 304.9 Really Low 13:08:01 - 13:13:17 2262
Victoria 13:10:43 -27.9 Dark Up 21.1 302.7 Low 13:08:05 - 13:13:21 2247
Yakima 13:10:38 -25.8 Dark Up 18.4 305.0 Really Low 13:08:00 - 13:13:16 2229
Toppenish/White Swan 13:10:37 -25.6 Dark Up 18.2 305.2 Really Low 13:07:59 - 13:13:15 2221
Goldendale 13:10:36 -25.9 Dark Up 18.1 305.1 Really Low 13:07:58 - 13:13:14 2157
The Dalles 13:10:36 -26.1 Dark Up 18.2 304.9 Really Low 13:07:58 - 13:13:14 2122
Maupin 13:10:35 -26.0 Dark Up 17.9 305.1 Really Low 13:07:57 - 13:13:13 2094
Redmond 13:10:33 -25.9 Dark Up 17.4 305.3 Really Low 13:07:55 - 13:13:11 2018
Sisters 13:10:33 -26.2 Dark Up 17.7 305.0 Really Low 13:07:55 - 13:13:11 2000
Bend 13:10:32 -26.0 Dark Up 17.4 305.2 Really Low 13:07:54 - 13:13:10 1994
Oregon Observatory 13:10:32 -26.1 Dark Up 17.4 305.2 Really Low 13:07:54 - 13:13:10 1973
La Pine/Gilchrist 13:10:32 -26.1 Dark Up 17.3 305.2 Really Low 13:07:54 - 13:13:10 1954
North Lake 13:10:31 -25.6 Dark Up 16.7 305.7 Really Low 13:07:53 - 13:13:09 1950
Paisley 13:10:29 -25.3 Dark Up 16.1 306.0 Really Low 13:07:51 - 13:13:07 1924
Lakeview 13:10:29 -25.1 Dark Up 15.7 306.2 Really Low 13:07:51 - 13:13:07 1893
Cedarville 13:10:27 -24.8 Dark Up 15.2 306.5 Really Low 13:07:49 - 13:13:05 1850
Klamath Falls 13:10:29 -26.1 Dark Up 16.6 305.4 Really Low 13:07:51 - 13:13:07 1823
Fall River/Burney 13:10:26 -25.7 Dark Up 15.7 305.9 Really Low 13:07:48 - 13:13:04 1746
Susanville 13:10:25 -25.0 Dark Up 14.9 306.4 Really Low 13:07:47 - 13:13:03 1734
Tonopah 13:10:21 -22.0 Dark Up 11.3 308.7 Really Low 13:07:43 - 13:12:59 1733
Patrick 13:10:18 -18.8 Dark Up 7.6 310.7 Really Low 13:07:40 - 13:12:56 1717
Reno 13:10:24 -24.3 Dark Up 13.8 307.1 Really Low 13:07:46 - 13:13:02 1709
George/Scottsdale 13:10:16 -16.7 AT Up 5.2 311.9 Really Low 13:07:38 - 13:12:54 1706
Indian Springs 13:10:19 -20.5 Dark Up 9.5 309.7 Really Low 13:07:41 - 13:12:57 1703
Henderson 13:10:18 -19.8 Dark Up 8.7 310.1 Really Low 13:07:40 - 13:12:56 1701
Gimple 13:10:25 -25.1 Dark Up 14.8 306.4 Really Low 13:07:47 - 13:13:03 1700
Yerington 13:10:23 -23.7 Dark Up 13.1 307.5 Really Low 13:07:45 - 13:13:01 1700
Greenville 13:10:25 -25.2 Dark Up 14.9 306.3 Really Low 13:07:47 - 13:13:03 1696
Portola 13:10:24 -24.8 Dark Up 14.4 306.7 Really Low 13:07:46 - 13:13:02 1695
Hawthorne 13:10:22 -23.2 Dark Up 12.5 307.9 Really Low 13:07:44 - 13:13:00 1692
Kingman/Dolan Springs 13:10:17 -18.8 Dark Up 7.6 310.6 Really Low 13:07:39 - 13:12:55 1689
Carson City 13:10:23 -24.2 Dark Up 13.6 307.1 Really Low 13:07:45 - 13:13:01 1681
Quincy 13:10:24 -25.2 Dark Up 14.8 306.4 Really Low 13:07:46 - 13:13:02 1680
Beatty 13:10:19 -21.4 Dark Up 10.3 309.1 Really Low 13:07:41 - 13:12:57 1666
Gardnerville 13:10:23 -24.1 Dark Up 13.4 307.2 Really Low 13:07:45 - 13:13:01 1663
Laughlin/Bullhead City 13:10:17 -19.3 Dark Up 7.9 310.4 Really Low 13:07:39 - 13:12:55 1656
Mohave Valley 13:10:17 -19.2 Dark Up 7.7 310.4 Really Low 13:07:39 - 13:12:55 1634
Lee Vining 13:10:21 -23.4 Dark Up 12.5 307.7 Really Low 13:07:43 - 13:12:59 1619
Lake Havasu City 13:10:16 -18.9 Dark Up 7.3 310.6 Really Low 13:07:38 - 13:12:54 1617
Bishop 13:10:20 -22.7 Dark Up 11.6 308.2 Really Low 13:07:42 - 13:12:58 1611
Parker 13:10:16 -18.8 Dark Up 7.0 310.6 Really Low 13:07:38 - 13:12:54 1591
Blythe 13:10:15 -18.9 Dark Up 6.9 310.5 Really Low 13:07:37 - 13:12:53 1531
Yuma 13:10:14 -18.7 Dark Up 6.3 310.6 Really Low 13:07:36 - 13:12:52 1455
Calipatria 13:10:14 -19.5 Dark Up 7.2 310.1 Really Low 13:07:36 - 13:12:52 1435
Idyllwild 13:10:15 -20.6 Dark Up 8.3 309.5 Really Low 13:07:37 - 13:12:53 1413
Wildwood 13:10:15 -22.2 Dark Up 9.8 308.5 Really Low 13:07:37 - 13:12:53 1331
CPSLO 13:10:17 -24.1 Dark Up 11.8 307.4 Really Low 13:07:39 - 13:12:55 1312

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, (2021/01/03 13:15UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 21.95  88
3Iot Aur       04:56:59.6 +33:09:58  2.7  4.77  79
PPM 070048     05:13:17.2 +37:20:12  6.5  0.67  76
PPM 069986     05:09:56.4 +37:00:16  8.3  0.12  76
248835         05:10:05.1 +37:07:17 15.1        76
Positions are for J2000

Event circumstances last updated at 2020/12/20 23:36:48 UT

Marc W. Buie, Southwest Research Institute

RECON