RECON: TNO occultation with 85627

Event between (85627) 98HP151 and star GA0660:09510447 with event index number of 198294

Geocentric closest approach at 2019/07/06 04:39:25 UTC

J2000 position of star is 17:06:26.3 -23:27:39
Equinox of date position of star is 17:07:33.4 -23:29:04
Stellar brightness G=15.1, use SENSEUP=128
Star is 108 degrees from the moon. Moon is 16% illuminated.
TNO apparent brightness V=23.6

[RECON map]
TNO is 41.3 AU from the Sun and 40.4 AU from the Earth.
The TNO is moving 21.6 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 705 seconds.
The 1-sigma cross-track error in the shadow position is 2600 km.
The sky-plane scale is 29285.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 9.2 sec chord
Diameter=81.5 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 85627, (2019/07/06 04:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.4 -26:28:25  0.9  8.90 100
35Eta Oph      17:11:29.9 -15:44:52  2.6  7.79 107
PPM 266403     17:07:21.8 -21:35:24  6.3  1.90 107
PPM 266382     17:06:33.4 -23:44:27  8.5  0.35 107
PPM 266406     17:07:39.6 -23:30:51  9.2  0.03 108
85627          17:07:37.3 -23:29:09 15.1       108
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 1.3 sigma about the mid-time.
The median site spacing is 15.4 km RECON observability=0.3 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 04:42:19 -5.2 CT Up 14.5 159.5 Really Low 04:27:19 - 04:57:19 13024
Oroville 04:42:19 -5.6 CT Up 15.1 159.5 Really Low 04:27:19 - 04:57:19 13003
Tonasket 04:42:19 -5.8 CT Up 15.3 159.5 Really Low 04:27:19 - 04:57:19 12994
Okanogan 04:42:20 -6.0 CT Up 15.6 159.4 Really Low 04:27:20 - 04:57:20 12978
Brewster 04:42:21 -6.1 CT Up 15.8 159.1 Really Low 04:27:21 - 04:57:21 12964
Manson/Chelan 04:42:23 -6.0 CT Up 15.9 158.8 Really Low 04:27:23 - 04:57:23 12949
Entiat 04:42:23 -6.2 CT Up 16.1 158.7 Really Low 04:27:23 - 04:57:23 12939
Wenatchee 04:42:23 -6.3 CT Up 16.3 158.6 Really Low 04:27:23 - 04:57:23 12927
Ellensburg 04:42:25 -6.5 CT Up 16.6 158.3 Really Low 04:27:25 - 04:57:25 12906
Pasco 04:42:21 -7.7 CT Up 17.7 159.6 Really Low 04:27:21 - 04:57:21 12899
PNWRO 04:42:21 -8.0 CT Up 18.0 159.8 Really Low 04:27:21 - 04:57:21 12892
Yakima 04:42:26 -6.7 CT Up 17.0 158.3 Really Low 04:27:26 - 04:57:26 12888
Toppenish/White Swan 04:42:26 -7.0 CT Up 17.2 158.4 Really Low 04:27:26 - 04:57:26 12882
George/Umatilla 04:42:22 -7.8 CT Up 17.9 159.3 Really Low 04:27:22 - 04:57:22 12881
Goldendale 04:42:26 -7.1 CT Up 17.7 158.0 Really Low 04:27:26 - 04:57:26 12850
The Dalles 04:42:28 -7.1 CT Up 17.8 157.6 Really Low 04:27:28 - 04:57:28 12833
Niwot 04:41:37 -18.8 Dark Up 26.0 172.4 Low 04:26:37 - 04:56:37 12822
Maupin 04:42:28 -7.5 CT Up 18.2 157.7 Really Low 04:27:28 - 04:57:28 12816
Madras/Culver 04:42:30 -7.8 CT Up 18.7 157.6 Really Low 04:27:30 - 04:57:30 12790
Redmond 04:42:30 -8.0 CT Up 19.0 157.5 Really Low 04:27:30 - 04:57:30 12772
Sisters 04:42:31 -7.8 CT Up 18.9 157.1 Really Low 04:27:31 - 04:57:31 12765
Bend 04:42:32 -8.1 CT Up 19.2 157.3 Really Low 04:27:32 - 04:57:32 12759
Oregon Observatory 04:42:31 -8.1 CT Up 19.3 157.2 Really Low 04:27:31 - 04:57:31 12748
La Pine/Gilchrist 04:42:31 -8.3 CT Up 19.4 157.1 Really Low 04:27:31 - 04:57:31 12737
North Lake 04:42:30 -8.9 CT Up 20.0 157.6 Low 04:27:30 - 04:57:30 12728
Paisley 04:42:30 -9.4 CT Up 20.6 157.8 Low 04:27:30 - 04:57:30 12708
Lakeview 04:42:30 -9.9 CT Up 21.2 157.9 Low 04:27:30 - 04:57:30 12686
Chiloquin 04:42:34 -8.8 CT Up 20.4 156.6 Low 04:27:34 - 04:57:34 12676
Klamath Falls 04:42:34 -9.1 CT Up 20.7 156.6 Low 04:27:34 - 04:57:34 12660
Cedarville 04:42:30 -10.4 CT Up 21.8 158.0 Low 04:27:30 - 04:57:30 12656
Tulelake 04:42:34 -9.4 CT Up 21.0 156.9 Low 04:27:34 - 04:57:34 12652
Fall River/Burney 04:42:34 -10.1 CT Up 21.9 156.8 Low 04:27:34 - 04:57:34 12607
Susanville 04:42:32 -10.9 CT Up 22.7 157.4 Low 04:27:32 - 04:57:32 12588
Gimple 04:42:34 -11.0 CT Up 22.9 157.1 Low 04:27:34 - 04:57:34 12569
Greenville 04:42:34 -11.0 CT Up 22.9 157.1 Low 04:27:34 - 04:57:34 12567
Portola 04:42:31 -11.5 CT Up 23.3 157.5 Low 04:27:31 - 04:57:31 12559
Reno 04:42:31 -12.0 AT Up 23.8 158.0 Low 04:27:31 - 04:57:31 12558
Quincy 04:42:34 -11.1 CT Up 23.1 157.0 Low 04:27:34 - 04:57:34 12557
Yerington 04:42:28 -12.7 AT Up 24.5 158.6 Low 04:27:28 - 04:57:28 12540
Carson City 04:42:31 -12.3 AT Up 24.1 158.0 Low 04:27:31 - 04:57:31 12539
Gardnerville 04:42:31 -12.5 AT Up 24.3 158.0 Low 04:27:31 - 04:57:31 12526
Tonopah 04:42:23 -14.5 AT Up 25.9 160.3 Low 04:27:23 - 04:57:23 12526
Hawthorne 04:42:27 -13.4 AT Up 25.0 159.0 Low 04:27:27 - 04:57:27 12525
Lee Vining 04:42:30 -13.5 AT Up 25.4 158.4 Low 04:27:30 - 04:57:30 12483
Indian Springs 04:42:18 -16.4 AT Up 27.7 161.5 Low 04:27:18 - 04:57:18 12470
Beatty 04:42:21 -15.5 AT Up 27.1 160.5 Low 04:27:21 - 04:57:21 12468
Bishop 04:42:27 -14.3 AT Up 26.2 159.0 Low 04:27:27 - 04:57:27 12464
Henderson 04:42:16 -17.1 AT Up 28.3 162.1 Low 04:27:16 - 04:57:16 12451
Patrick 04:42:12 -18.2 Dark Up 29.2 163.1 Low 04:27:12 - 04:57:12 12434
DCO 04:42:09 -18.8 Dark Up 29.7 163.8 Low 04:27:09 - 04:57:09 12428
Lone Pine 04:42:27 -15.0 AT Up 27.0 159.2 Low 04:27:27 - 04:57:27 12426
Searchlight/Boulder City 04:42:15 -17.6 AT Up 28.9 162.1 Low 04:27:15 - 04:57:15 12418
Kingman/Dolan Springs 04:42:13 -18.3 Dark Up 29.4 162.9 Low 04:27:13 - 04:57:13 12417
Laughlin/Bullhead City 04:42:15 -18.0 Dark Up 29.3 162.4 Low 04:27:15 - 04:57:15 12407
Mohave Valley 04:42:15 -18.2 Dark Up 29.5 162.3 Low 04:27:15 - 04:57:15 12390
Lake Havasu City 04:42:14 -18.6 Dark Up 30.0 162.5 Low 04:27:14 - 04:57:14 12370
Parker 04:42:15 -18.9 Dark Up 30.3 162.5 Up 04:27:15 - 04:57:15 12349
Blythe 04:42:16 -19.1 Dark Up 30.7 162.1 Up 04:27:16 - 04:57:16 12311
CPSLO 04:42:38 -14.4 AT Up 27.4 156.5 Low 04:27:38 - 04:57:38 12294
Idyllwild 04:42:24 -17.8 AT Up 30.1 160.0 Up 04:27:24 - 04:57:24 12278
Calipatria 04:42:19 -18.9 Dark Up 31.0 161.1 Up 04:27:19 - 04:57:19 12262
Wildwood 04:42:31 -16.5 AT Up 29.2 158.2 Low 04:27:31 - 04:57:31 12262
Yuma 04:42:17 -19.8 Dark Up 31.6 161.9 Up 04:27:17 - 04:57:17 12252

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 85627, (2019/07/06 04:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.90 100
35Eta Oph      17:10:22.7 -15:43:29  2.6  7.79 107
PPM 266403     17:06:11.8 -21:33:54  6.3  1.90 107
PPM 266382     17:05:22.3 -23:42:56  8.5  0.35 107
PPM 266406     17:06:28.5 -23:29:22  9.2  0.03 108
85627          17:06:26.3 -23:27:39 15.1       108
Positions are for J2000

Event circumstances last updated at 2018/06/12 02:22:18 UT

Marc W. Buie, Southwest Research Institute

RECON