RECON: TNO occultation with 85627

Event between (85627) 98HP151 and star UC4-333-094214 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 17:07:30.0 -23:29:00
Stellar brightness R=15.3, 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 683 seconds.
The 1-sigma cross-track error in the shadow position is 2546 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 15.3       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 16.5 km RECON observability=0.3 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)
Oroville 04:41:00 -5.5 CT Up 15.0 159.2 Really Low 04:26:00 - 04:56:00 12269
Tonasket 04:41:01 -5.6 CT Up 15.2 159.2 Really Low 04:26:01 - 04:56:01 12260
Okanogan 04:41:02 -5.8 CT Up 15.5 159.1 Really Low 04:26:02 - 04:56:02 12244
Brewster 04:41:03 -5.9 CT Up 15.7 158.8 Really Low 04:26:03 - 04:56:03 12230
Manson/Chelan 04:41:04 -5.9 CT Up 15.8 158.5 Really Low 04:26:04 - 04:56:04 12215
Entiat 04:41:04 -6.0 CT Up 16.0 158.4 Really Low 04:26:04 - 04:56:04 12204
Wenatchee 04:41:05 -6.1 CT Up 16.2 158.3 Really Low 04:26:05 - 04:56:05 12192
Ellensburg 04:41:07 -6.3 CT Up 16.5 158.0 Really Low 04:26:07 - 04:56:07 12171
Pasco 04:41:03 -7.5 CT Up 17.6 159.3 Really Low 04:26:03 - 04:56:03 12164
PNWRO 04:41:02 -7.8 CT Up 17.9 159.4 Really Low 04:26:02 - 04:56:02 12158
Yakima 04:41:07 -6.6 CT Up 16.9 158.0 Really Low 04:26:07 - 04:56:07 12153
Toppenish/White Swan 04:41:07 -6.8 CT Up 17.2 158.1 Really Low 04:26:07 - 04:56:07 12147
George/Umatilla 04:41:04 -7.6 CT Up 17.9 159.0 Really Low 04:26:04 - 04:56:04 12146
Goldendale 04:41:09 -7.0 CT Up 17.6 157.7 Really Low 04:26:09 - 04:56:09 12115
The Dalles 04:41:10 -6.9 CT Up 17.7 157.3 Really Low 04:26:10 - 04:56:10 12098
Niwot 04:40:19 -18.7 Dark Up 26.0 172.0 Low 04:25:19 - 04:55:19 12089
Maupin 04:41:10 -7.3 CT Up 18.1 157.4 Really Low 04:26:10 - 04:56:10 12081
Madras/Culver 04:41:11 -7.6 CT Up 18.6 157.2 Really Low 04:26:11 - 04:56:11 12055
Redmond 04:41:12 -7.9 CT Up 18.9 157.2 Really Low 04:26:12 - 04:56:12 12038
Sisters 04:41:13 -7.6 CT Up 18.8 156.8 Really Low 04:26:13 - 04:56:13 12031
Bend 04:41:13 -7.9 CT Up 19.1 157.0 Really Low 04:26:13 - 04:56:13 12025
Oregon Observatory 04:41:14 -8.0 CT Up 19.2 156.9 Really Low 04:26:14 - 04:56:14 12014
La Pine/Gilchrist 04:41:14 -8.1 CT Up 19.4 156.8 Really Low 04:26:14 - 04:56:14 12003
North Lake 04:41:12 -8.7 CT Up 19.9 157.3 Really Low 04:26:12 - 04:56:12 11994
Paisley 04:41:12 -9.3 CT Up 20.5 157.5 Low 04:26:12 - 04:56:12 11974
Lakeview 04:41:12 -9.7 CT Up 21.1 157.6 Low 04:26:12 - 04:56:12 11952
Chiloquin 04:41:16 -8.6 CT Up 20.3 156.3 Low 04:26:16 - 04:56:16 11942
Klamath Falls 04:41:17 -8.9 CT Up 20.6 156.3 Low 04:26:17 - 04:56:17 11926
Cedarville 04:41:12 -10.3 CT Up 21.7 157.7 Low 04:26:12 - 04:56:12 11922
Tulelake 04:41:16 -9.3 CT Up 21.0 156.6 Low 04:26:16 - 04:56:16 11918
Fall River/Burney 04:41:16 -9.9 CT Up 21.8 156.5 Low 04:26:16 - 04:56:16 11872
Susanville 04:41:14 -10.8 CT Up 22.6 157.1 Low 04:26:14 - 04:56:14 11854
Gimple 04:41:15 -10.8 CT Up 22.8 156.8 Low 04:26:15 - 04:56:15 11835
Greenville 04:41:16 -10.8 CT Up 22.8 156.8 Low 04:26:16 - 04:56:16 11833
Portola 04:41:15 -11.3 CT Up 23.2 157.2 Low 04:26:15 - 04:56:15 11826
Reno 04:41:13 -11.8 CT Up 23.7 157.7 Low 04:26:13 - 04:56:13 11824
Quincy 04:41:16 -10.9 CT Up 23.0 156.7 Low 04:26:16 - 04:56:16 11822
Yerington 04:41:11 -12.6 AT Up 24.4 158.3 Low 04:26:11 - 04:56:11 11807
Carson City 04:41:13 -12.1 AT Up 24.0 157.7 Low 04:26:13 - 04:56:13 11805
Tonopah 04:41:04 -14.3 AT Up 25.8 159.9 Low 04:26:04 - 04:56:04 11792
Gardnerville 04:41:12 -12.3 AT Up 24.2 157.7 Low 04:26:12 - 04:56:12 11792
Hawthorne 04:41:09 -13.2 AT Up 24.9 158.7 Low 04:26:09 - 04:56:09 11791
Lee Vining 04:41:12 -13.3 AT Up 25.3 158.1 Low 04:26:12 - 04:56:12 11750
Indian Springs 04:41:00 -16.2 AT Up 27.6 161.2 Low 04:26:00 - 04:56:00 11735
Beatty 04:41:03 -15.4 AT Up 27.0 160.2 Low 04:26:03 - 04:56:03 11734
Bishop 04:41:10 -14.1 AT Up 26.1 158.7 Low 04:26:10 - 04:56:10 11730
Henderson 04:40:58 -17.0 AT Up 28.3 161.8 Low 04:25:58 - 04:55:58 11717
Patrick 04:40:54 -18.0 Dark Up 29.1 162.8 Low 04:25:54 - 04:55:54 11700
DCO 04:40:52 -18.7 Dark Up 29.6 163.5 Low 04:25:52 - 04:55:52 11694
Lone Pine 04:41:09 -14.8 AT Up 26.9 158.9 Low 04:26:09 - 04:56:09 11692
Searchlight/Boulder City 04:40:58 -17.4 AT Up 28.8 161.7 Low 04:25:58 - 04:55:58 11684
Kingman/Dolan Springs 04:40:55 -18.1 Dark Up 29.3 162.6 Low 04:25:55 - 04:55:55 11683
Laughlin/Bullhead City 04:40:57 -17.8 AT Up 29.2 162.0 Low 04:25:57 - 04:55:57 11672
Mohave Valley 04:40:57 -18.0 Dark Up 29.4 162.0 Low 04:25:57 - 04:55:57 11655
Lake Havasu City 04:40:56 -18.5 Dark Up 29.9 162.2 Low 04:25:56 - 04:55:56 11636
Parker 04:40:56 -18.7 Dark Up 30.2 162.2 Up 04:25:56 - 04:55:56 11614
Blythe 04:40:58 -18.9 Dark Up 30.7 161.8 Up 04:25:58 - 04:55:58 11576
CPSLO 04:41:20 -14.2 AT Up 27.3 156.2 Low 04:26:20 - 04:56:20 11559
Idyllwild 04:41:06 -17.6 AT Up 30.0 159.7 Low 04:26:06 - 04:56:06 11544
Wildwood 04:41:13 -16.3 AT Up 29.1 157.9 Low 04:26:13 - 04:56:13 11528
Calipatria 04:41:02 -18.7 Dark Up 30.9 160.7 Up 04:26:02 - 04:56:02 11527
Yuma 04:40:58 -19.6 Dark Up 31.5 161.5 Up 04:25:58 - 04:55:58 11517

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 -23:29:21  9.2  0.03 108
85627          17:06:26.3 -23:27:39 15.3       108
Positions are for J2000

Event circumstances last updated at 2017/07/01 17:51:17 UT

Marc W. Buie, Southwest Research Institute

RECON