RECON: TNO occultation with 10370

Event between (10370) Hylonome and star GA0700:31746811 with event index number of 277215

Geocentric closest approach at 2020/07/13 05:42:03 UTC

J2000 position of star is 19:03:02.6 -18:29:36
Equinox of date position of star is 19:04:14.4 -18:27:44
Stellar brightness G=16.5, use SENSEUP=128
Star is 99 degrees from the moon. Moon is 48% illuminated.
TNO apparent brightness V=23.9

[RECON map]
TNO is 24.7 AU from the Sun and 23.7 AU from the Earth.
The TNO is moving 23.3 km/sec on the sky relative to the star, or, 4.9 arcsec/hr.
The 1-sigma error in the time of the event is 1398 seconds.
The 1-sigma cross-track error in the shadow position is 2891 km.
The sky-plane scale is 17160.2 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=114.8 km assuming a 5% albedo -- 2.6 sec chord
Diameter=46.9 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10370, (2020/07/13 05:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:40.2 -26:28:33  0.9 36.23 133
Nunki          18:56:32.2 -26:16:10  2.0  8.01 101
PPM 235418     19:04:16.3 -19:12:52  5.9  0.75  99
PPM 235424     19:04:19.3 -19:04:18  6.8  0.61  99
PPM 235390     19:03:22.0 -18:30:58  9.2  0.21 100
10370          19:04:14.6 -18:27:43 16.5        99
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 0.6 sigma about the mid-time.
The median site spacing is 14.2 km RECON observability=0.7 and success probability=7.3%
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 05:42:53 -11.6 NT Down 17.0 152.5 Really Low 05:27:53 - 05:57:53 1277
Kelowna 05:42:55 -11.9 NT Down 17.3 152.3 Really Low 05:27:55 - 05:57:55 1261
Peachland 05:42:55 -11.9 NT Down 17.3 152.0 Really Low 05:27:55 - 05:57:55 1256
Summerland 05:42:55 -12.0 AT Down 17.5 152.0 Really Low 05:27:55 - 05:57:55 1251
Penticton 05:42:55 -12.1 AT Down 17.6 152.1 Really Low 05:27:55 - 05:57:55 1248
Oliver 05:42:56 -12.4 AT Down 17.9 152.1 Really Low 05:27:56 - 05:57:56 1234
Anarchist Mountain Observatory 05:42:56 -12.6 AT Down 18.1 152.2 Really Low 05:27:56 - 05:57:56 1228
Tonasket 05:42:56 -12.9 AT Down 18.4 152.1 Really Low 05:27:56 - 05:57:56 1215
Okanogan 05:42:58 -13.1 AT Down 18.6 151.9 Really Low 05:27:58 - 05:57:58 1201
Victoria 05:43:08 -11.5 NT Down 17.2 148.4 Really Low 05:28:08 - 05:58:08 1193
Brewster 05:42:59 -13.3 AT Down 18.8 151.7 Really Low 05:27:59 - 05:57:59 1189
Manson/Chelan 05:43:00 -13.3 AT Down 18.9 151.3 Really Low 05:28:00 - 05:58:00 1179
Entiat 05:43:01 -13.5 AT Down 19.0 151.2 Really Low 05:28:01 - 05:58:01 1169
Wenatchee 05:43:01 -13.6 AT Down 19.2 151.1 Really Low 05:28:01 - 05:58:01 1158
Ellensburg 05:43:03 -13.9 AT Down 19.5 150.8 Really Low 05:28:03 - 05:58:03 1139
Yakima 05:43:04 -14.2 AT Down 19.9 150.7 Really Low 05:28:04 - 05:58:04 1121
Toppenish/White Swan 05:43:04 -14.5 AT Down 20.1 150.9 Low 05:28:04 - 05:58:04 1112
Pasco 05:43:00 -15.0 AT Down 20.6 152.0 Low 05:28:00 - 05:58:00 1110
PNWRO 05:43:00 -15.3 AT Down 20.9 152.2 Low 05:28:00 - 05:58:00 1100
Goldendale 05:43:06 -14.8 AT Down 20.4 150.4 Low 05:28:06 - 05:58:06 1085
The Dalles 05:43:08 -14.8 AT Down 20.5 150.0 Low 05:28:08 - 05:58:08 1073
Maupin 05:43:08 -15.2 AT Down 20.9 150.0 Low 05:28:08 - 05:58:08 1054
Redmond 05:43:10 -15.9 AT Down 21.7 149.8 Low 05:28:10 - 05:58:10 1011
Sisters 05:43:11 -15.7 AT Down 21.5 149.4 Low 05:28:11 - 05:58:11 1010
Bend 05:43:11 -16.0 AT Down 21.8 149.6 Low 05:28:11 - 05:58:11 1000
Oregon Observatory 05:43:12 -16.1 AT Down 21.9 149.4 Low 05:28:12 - 05:58:12 991
La Pine/Gilchrist 05:43:12 -16.2 AT Down 22.1 149.3 Low 05:28:12 - 05:58:12 981
North Lake 05:43:11 -16.8 AT Down 22.7 149.8 Low 05:28:11 - 05:58:11 961
Paisley 05:43:11 -17.4 AT Down 23.3 150.0 Low 05:28:11 - 05:58:11 934
Klamath Falls 05:43:12 -17.3 AT Down 23.2 148.8 Low 05:28:12 - 05:58:12 910
Lakeview 05:43:11 -17.9 AT Down 23.8 150.1 Low 05:28:11 - 05:58:11 909
Cedarville 05:43:12 -18.5 Dark Down 24.4 150.1 Low 05:28:12 - 05:58:12 874
Fall River/Burney 05:43:12 -18.4 Dark Down 24.4 148.9 Low 05:28:12 - 05:58:12 852
Susanville 05:43:12 -19.2 Dark Down 25.2 149.4 Low 05:28:12 - 05:58:12 817
Greenville 05:43:12 -19.3 Dark Down 25.3 149.1 Low 05:28:12 - 05:58:12 805
Gimple 05:43:12 -19.4 Dark Down 25.3 149.1 Low 05:28:12 - 05:58:12 804
Niwot 05:42:24 -25.1 Dark Down 30.0 164.9 Up 05:27:24 - 05:57:24 795
Quincy 05:43:12 -19.5 Dark Down 25.5 149.0 Low 05:28:12 - 05:58:12 795
SwRI 05:42:24 -25.2 Dark Down 30.1 164.8 Up 05:27:24 - 05:57:24 789
Portola 05:43:12 -19.8 Dark Down 25.8 149.4 Low 05:28:12 - 05:58:12 786
Reno 05:43:12 -20.3 Dark Down 26.3 150.0 Low 05:28:12 - 05:58:12 769
Carson City 05:43:12 -20.6 Dark Down 26.6 149.9 Low 05:28:12 - 05:58:12 750
Yerington 05:43:12 -21.1 Dark Down 27.0 150.5 Low 05:28:12 - 05:58:12 737
Gardnerville 05:43:12 -20.9 Dark Down 26.8 149.9 Low 05:28:12 - 05:58:12 737
Hawthorne 05:43:12 -21.7 Dark Down 27.6 150.9 Low 05:28:12 - 05:58:12 711
Tonopah 05:43:08 -22.7 Dark Down 28.5 152.2 Low 05:28:08 - 05:58:08 687
Lee Vining 05:43:12 -21.9 Dark Down 27.9 150.3 Low 05:28:12 - 05:58:12 681
Bishop 05:43:12 -22.8 Dark Down 28.7 150.8 Low 05:28:12 - 05:58:12 644
Beatty 05:43:08 -23.9 Dark Down 29.7 152.3 Low 05:28:08 - 05:58:08 618
Indian Springs 05:43:05 -24.6 Dark Down 30.4 153.3 Up 05:28:05 - 05:58:05 600
Henderson 05:43:04 -25.3 Dark Down 31.1 153.9 Up 05:28:04 - 05:58:04 567
Searchlight/Boulder City 05:43:04 -25.9 Dark Down 31.7 153.8 Up 05:28:04 - 05:58:04 532
Patrick 05:43:01 -26.3 Dark Down 32.1 154.9 Up 05:28:01 - 05:58:01 529
Kingman/Dolan Springs 05:43:02 -26.5 Dark Down 32.2 154.6 Up 05:28:02 - 05:58:02 515
Laughlin/Bullhead City 05:43:03 -26.3 Dark Down 32.1 154.1 Up 05:28:03 - 05:58:03 512
DCO 05:42:58 -26.9 Dark Down 32.6 155.5 Up 05:27:58 - 05:57:58 510
CPSLO 05:43:24 -23.4 Dark Down 29.6 148.1 Low 05:28:24 - 05:58:24 506
Mohave Valley 05:43:04 -26.5 Dark Down 32.3 154.0 Up 05:28:04 - 05:58:04 495
Wildwood 05:43:12 -25.3 Dark Down 31.5 149.7 Up 05:28:12 - 05:58:12 472
Lake Havasu City 05:43:04 -26.9 Dark Down 32.8 154.2 Up 05:28:04 - 05:58:04 469
Parker 05:43:04 -27.3 Dark Down 33.1 154.1 Up 05:28:04 - 05:58:04 446
Idyllwild 05:43:12 -26.5 Dark Down 32.6 151.5 Up 05:28:12 - 05:58:12 419
George/Scottsdale 05:42:56 -28.6 Dark Down 34.3 156.5 Up 05:27:56 - 05:57:56 419
Blythe 05:43:06 -27.6 Dark Down 33.5 153.6 Up 05:28:06 - 05:58:06 412
Calipatria 05:43:10 -27.6 Dark Down 33.6 152.5 Up 05:28:10 - 05:58:10 378
Yuma 05:43:07 -28.3 Dark Down 34.3 153.3 Up 05:28:07 - 05:58:07 350

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 10370, (2020/07/13 05:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 36.23 133
Nunki          18:55:15.9 -26:17:49  2.0  8.01 101
PPM 235418     19:03:04.0 -19:14:44  5.9  0.75  99
PPM 235424     19:03:07.1 -19:06:11  6.8  0.61  99
PPM 235390     19:02:10.0 -18:32:49  9.2  0.21 100
10370          19:03:02.6 -18:29:36 16.5        99
Positions are for J2000

Event circumstances last updated at 2020/06/21 04:56:31 UT

Marc W. Buie, Southwest Research Institute

RECON