RECON: TNO occultation with 307261

Event between (307261) 02MS4 and star GA0820:12208357 with event index number of 204030

Geocentric closest approach at 2019/07/16 10:41:23 UTC

J2000 position of star is 18:44:47.7 -06:25:05
Equinox of date position of star is 18:45:47.2 -06:23:53
Stellar brightness G=15.9, use SENSEUP=128
Star is 18 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=20.3

[RECON map]
TNO is 46.6 AU from the Sun and 45.6 AU from the Earth.
The TNO is moving 24.6 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 184 seconds.
The 1-sigma cross-track error in the shadow position is 1881 km.
The sky-plane scale is 33096.0 km/arcsec.

The TNO has an absolute magnitude Hv=3.6
Diameter=1148.2 km assuming a 5% albedo -- 46.6 sec chord
Diameter=468.7 km assuming a 30% albedo -- 19.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 307261, (2019/07/16 10:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.5 -26:28:25  0.9 37.93  39
60Bet Oph      17:44:26.3 +04:33:38  2.8 18.84  36
PPM 202054     18:43:39.4 -07:03:12  6.5  0.85  18
PPM 202094     18:45:43.9 -06:30:53  6.8  0.12  18
PPM 202101     18:45:52.6 -06:19:09  9.1  0.08  18
307261         18:45:50.7 -06:23:48 15.9        18
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 4.9 sigma about the mid-time.
The median site spacing is 26.5 km RECON observability=0.6 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)
Penticton 10:48:00 -10.3 CT Up 16.4 238.3 Really Low 10:33:00 - 11:03:00 -22148
Oroville 10:47:58 -10.8 CT Up 16.7 238.6 Really Low 10:32:58 - 11:02:58 -22194
Tonasket 10:47:56 -10.9 CT Up 16.8 238.6 Really Low 10:32:56 - 11:02:56 -22212
Okanogan 10:47:56 -11.3 CT Up 17.1 238.6 Really Low 10:32:56 - 11:02:56 -22236
Brewster 10:47:57 -11.6 CT Up 17.3 238.5 Really Low 10:32:57 - 11:02:57 -22254
Manson/Chelan 10:47:56 -11.9 CT Up 17.6 238.2 Really Low 10:32:56 - 11:02:56 -22265
Entiat 10:47:56 -12.1 AT Up 17.8 238.2 Really Low 10:32:56 - 11:02:56 -22281
Wenatchee 10:47:56 -12.3 AT Up 18.0 238.2 Really Low 10:32:56 - 11:02:56 -22300
Ellensburg 10:47:54 -12.7 AT Up 18.3 238.1 Really Low 10:32:54 - 11:02:54 -22329
Yakima 10:47:54 -13.1 AT Up 18.6 238.2 Really Low 10:32:54 - 11:02:54 -22361
Toppenish/White Swan 10:47:54 -13.2 AT Up 18.6 238.4 Really Low 10:32:54 - 11:02:54 -22380
Pasco 10:47:52 -12.7 AT Up 17.9 239.5 Really Low 10:32:52 - 11:02:52 -22406
Goldendale 10:47:53 -13.8 AT Up 19.1 238.2 Really Low 10:32:53 - 11:02:53 -22418
PNWRO 10:47:50 -12.8 AT Up 17.9 239.8 Really Low 10:32:50 - 11:02:50 -22428
George/Umatilla 10:47:52 -13.1 AT Up 18.2 239.4 Really Low 10:32:52 - 11:02:52 -22429
The Dalles 10:47:52 -14.1 AT Up 19.5 238.0 Really Low 10:32:52 - 11:02:52 -22431
Maupin 10:47:51 -14.4 AT Up 19.6 238.2 Really Low 10:32:51 - 11:02:51 -22466
Madras/Culver 10:47:52 -14.9 AT Up 19.9 238.3 Really Low 10:32:52 - 11:02:52 -22510
Sisters 10:47:51 -15.3 AT Up 20.4 238.1 Low 10:32:51 - 11:02:51 -22531
Redmond 10:47:49 -15.2 AT Up 20.2 238.4 Low 10:32:49 - 11:02:49 -22538
Bend 10:47:49 -15.4 AT Up 20.3 238.3 Low 10:32:49 - 11:02:49 -22554
Oregon Observatory 10:47:50 -15.6 AT Up 20.5 238.3 Low 10:32:50 - 11:02:50 -22566
La Pine/Gilchrist 10:47:49 -15.8 AT Up 20.7 238.3 Low 10:32:49 - 11:02:49 -22582
North Lake 10:47:47 -15.9 AT Up 20.5 238.9 Low 10:32:47 - 11:02:47 -22626
Chiloquin 10:47:48 -16.8 AT Up 21.5 238.4 Low 10:32:48 - 11:02:48 -22669
Paisley 10:47:46 -16.1 AT Up 20.6 239.4 Low 10:32:46 - 11:02:46 -22677
Klamath Falls 10:47:47 -17.1 AT Up 21.6 238.5 Low 10:32:47 - 11:02:47 -22699
Lakeview 10:47:45 -16.5 AT Up 20.7 239.7 Low 10:32:45 - 11:02:45 -22722
Tulelake 10:47:47 -17.2 AT Up 21.6 238.9 Low 10:32:47 - 11:02:47 -22726
Cedarville 10:47:42 -16.9 AT Up 20.9 240.1 Low 10:32:42 - 11:02:42 -22780
Fall River/Burney 10:47:45 -17.8 AT Up 22.0 239.3 Low 10:32:45 - 11:02:45 -22804
Susanville 10:47:41 -18.0 AT Up 21.8 240.1 Low 10:32:41 - 11:02:41 -22868
Greenville 10:47:41 -18.3 Dark Up 22.1 239.9 Low 10:32:41 - 11:02:41 -22888
Gimple 10:47:40 -18.3 Dark Up 22.1 240.0 Low 10:32:40 - 11:02:40 -22889
Quincy 10:47:41 -18.5 Dark Up 22.2 240.0 Low 10:32:41 - 11:02:41 -22905
Portola 10:47:40 -18.4 Dark Up 22.0 240.4 Low 10:32:40 - 11:02:40 -22923
Reno 10:47:37 -18.3 Dark Up 21.7 241.0 Low 10:32:37 - 11:02:37 -22955
Carson City 10:47:37 -18.5 Dark Up 21.9 241.2 Low 10:32:37 - 11:02:37 -22987
Gardnerville 10:47:37 -18.7 Dark Up 21.9 241.3 Low 10:32:37 - 11:02:37 -23009
Yerington 10:47:35 -18.4 Dark Up 21.5 241.7 Low 10:32:35 - 11:02:35 -23013
Hawthorne 10:47:34 -18.5 Dark Up 21.4 242.3 Low 10:32:34 - 11:02:34 -23062
Niwot 10:47:16 -9.9 CT Up 11.2 251.6 Really Low 10:32:16 - 11:02:16 -23104
Lee Vining 10:47:34 -19.1 Dark Up 22.0 242.1 Low 10:32:34 - 11:02:34 -23105
Tonopah 10:47:30 -18.1 Dark Up 20.6 243.5 Low 10:32:30 - 11:02:30 -23124
Bishop 10:47:31 -19.2 Dark Up 21.8 242.9 Low 10:32:31 - 11:02:31 -23169
Beatty 10:47:26 -18.7 Dark Up 20.8 244.2 Low 10:32:26 - 11:02:26 -23235
Lone Pine 10:47:28 -19.6 Dark Up 21.9 243.4 Low 10:32:28 - 11:02:28 -23243
Indian Springs 10:47:25 -18.3 Dark Up 20.2 245.1 Low 10:32:25 - 11:02:25 -23280
CPSLO 10:47:31 -22.0 Dark Up 24.3 241.9 Low 10:32:31 - 11:02:31 -23323
Henderson 10:47:23 -18.3 Dark Up 19.9 245.8 Really Low 10:32:23 - 11:02:23 -23339
Searchlight/Boulder City 10:47:21 -18.7 Dark Up 20.1 246.0 Low 10:32:21 - 11:02:21 -23393
Patrick 10:47:19 -18.2 Dark Up 19.3 246.8 Really Low 10:32:19 - 11:02:19 -23413
Laughlin/Bullhead City 10:47:20 -18.7 Dark Up 19.9 246.3 Really Low 10:32:20 - 11:02:20 -23426
Kingman/Dolan Springs 10:47:18 -18.4 Dark Up 19.6 246.7 Really Low 10:32:18 - 11:02:18 -23431
Mohave Valley 10:47:19 -18.9 Dark Up 20.1 246.4 Low 10:32:19 - 11:02:19 -23451
DCO 10:47:17 -18.0 AT Up 18.9 247.3 Really Low 10:32:17 - 11:02:17 -23452
Wildwood 10:47:27 -21.8 Dark Up 23.4 243.9 Low 10:32:27 - 11:02:27 -23466
Lake Havasu City 10:47:18 -19.1 Dark Up 20.0 246.7 Low 10:32:18 - 11:02:18 -23492
Parker 10:47:19 -19.3 Dark Up 20.1 246.9 Low 10:32:19 - 11:02:19 -23526
Idyllwild 10:47:22 -21.0 Dark Up 22.1 245.4 Low 10:32:22 - 11:02:22 -23528
Blythe 10:47:18 -19.9 Dark Up 20.6 246.9 Low 10:32:18 - 11:02:18 -23571
Calipatria 10:47:17 -20.8 Dark Up 21.5 246.4 Low 10:32:17 - 11:02:17 -23603
Yuma 10:47:16 -20.5 Dark Up 21.0 247.1 Low 10:32:16 - 11:02:16 -23658

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 307261, (2019/07/16 10:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 37.93  39
60Bet Oph      17:43:28.3 +04:34:05  2.8 18.84  36
PPM 202054     18:42:36.1 -07:04:26  6.5  0.85  18
PPM 202094     18:44:40.9 -06:32:10  6.8  0.12  18
PPM 202101     18:44:49.7 -06:20:26  9.1  0.08  18
307261         18:44:47.7 -06:25:05 15.9        18
Positions are for J2000

Event circumstances last updated at 2018/06/12 02:23:59 UT

Marc W. Buie, Southwest Research Institute

RECON