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 17:07:31.5 -23:29:02
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 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 15.3       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 16.4 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 04:41:02 -5.5 CT Up 15.0 159.2 Really Low 04:26:02 - 04:56:02 12264
Tonasket 04:41:02 -5.6 CT Up 15.2 159.2 Really Low 04:26:02 - 04:56:02 12255
Okanogan 04:41:03 -5.8 CT Up 15.5 159.1 Really Low 04:26:03 - 04:56:03 12239
Brewster 04:41:03 -5.9 CT Up 15.7 158.8 Really Low 04:26:03 - 04:56:03 12224
Manson/Chelan 04:41:05 -5.9 CT Up 15.8 158.5 Really Low 04:26:05 - 04:56:05 12209
Entiat 04:41:06 -6.0 CT Up 16.0 158.4 Really Low 04:26:06 - 04:56:06 12199
Wenatchee 04:41:05 -6.1 CT Up 16.2 158.3 Really Low 04:26:05 - 04:56:05 12187
Ellensburg 04:41:08 -6.3 CT Up 16.5 158.1 Really Low 04:26:08 - 04:56:08 12166
Pasco 04:41:04 -7.5 CT Up 17.6 159.3 Really Low 04:26:04 - 04:56:04 12159
PNWRO 04:41:03 -7.8 CT Up 17.9 159.5 Really Low 04:26:03 - 04:56:03 12152
Yakima 04:41:08 -6.6 CT Up 16.9 158.0 Really Low 04:26:08 - 04:56:08 12148
Toppenish/White Swan 04:41:08 -6.8 CT Up 17.2 158.1 Really Low 04:26:08 - 04:56:08 12142
George/Umatilla 04:41:05 -7.6 CT Up 17.9 159.0 Really Low 04:26:05 - 04:56:05 12141
Goldendale 04:41:10 -7.0 CT Up 17.6 157.7 Really Low 04:26:10 - 04:56:10 12109
The Dalles 04:41:11 -6.9 CT Up 17.7 157.3 Really Low 04:26:11 - 04:56:11 12092
Niwot 04:40:19 -18.7 Dark Up 26.0 172.0 Low 04:25:19 - 04:55:19 12084
Maupin 04:41:10 -7.3 CT Up 18.1 157.4 Really Low 04:26:10 - 04:56:10 12075
Madras/Culver 04:41:13 -7.6 CT Up 18.6 157.3 Really Low 04:26:13 - 04:56:13 12049
Redmond 04:41:13 -7.9 CT Up 18.9 157.2 Really Low 04:26:13 - 04:56:13 12032
Sisters 04:41:14 -7.6 CT Up 18.8 156.8 Really Low 04:26:14 - 04:56:14 12025
Bend 04:41:14 -7.9 CT Up 19.1 157.0 Really Low 04:26:14 - 04:56:14 12019
Oregon Observatory 04:41:14 -8.0 CT Up 19.2 156.9 Really Low 04:26:14 - 04:56:14 12008
La Pine/Gilchrist 04:41:14 -8.1 CT Up 19.4 156.8 Really Low 04:26:14 - 04:56:14 11997
North Lake 04:41:14 -8.7 CT Up 19.9 157.3 Really Low 04:26:14 - 04:56:14 11987
Paisley 04:41:13 -9.3 CT Up 20.5 157.5 Low 04:26:13 - 04:56:13 11967
Lakeview 04:41:13 -9.7 CT Up 21.1 157.6 Low 04:26:13 - 04:56:13 11946
Chiloquin 04:41:17 -8.6 CT Up 20.3 156.3 Low 04:26:17 - 04:56:17 11935
Klamath Falls 04:41:17 -8.9 CT Up 20.6 156.3 Low 04:26:17 - 04:56:17 11919
Cedarville 04:41:13 -10.3 CT Up 21.7 157.7 Low 04:26:13 - 04:56:13 11915
Tulelake 04:41:17 -9.3 CT Up 21.0 156.6 Low 04:26:17 - 04:56:17 11912
Fall River/Burney 04:41:18 -9.9 CT Up 21.8 156.5 Low 04:26:18 - 04:56:18 11866
Susanville 04:41:16 -10.8 CT Up 22.6 157.1 Low 04:26:16 - 04:56:16 11847
Gimple 04:41:16 -10.8 CT Up 22.8 156.8 Low 04:26:16 - 04:56:16 11828
Greenville 04:41:17 -10.8 CT Up 22.8 156.8 Low 04:26:17 - 04:56:17 11827
Portola 04:41:16 -11.3 CT Up 23.2 157.2 Low 04:26:16 - 04:56:16 11819
Reno 04:41:13 -11.8 CT Up 23.7 157.7 Low 04:26:13 - 04:56:13 11817
Quincy 04:41:17 -10.9 CT Up 23.0 156.7 Low 04:26:17 - 04:56:17 11816
Yerington 04:41:12 -12.6 AT Up 24.4 158.3 Low 04:26:12 - 04:56:12 11800
Carson City 04:41:13 -12.1 AT Up 24.0 157.7 Low 04:26:13 - 04:56:13 11798
Tonopah 04:41:06 -14.3 AT Up 25.8 160.0 Low 04:26:06 - 04:56:06 11786
Gardnerville 04:41:14 -12.3 AT Up 24.2 157.7 Low 04:26:14 - 04:56:14 11785
Hawthorne 04:41:09 -13.2 AT Up 24.9 158.7 Low 04:26:09 - 04:56:09 11784
Lee Vining 04:41:13 -13.3 AT Up 25.3 158.1 Low 04:26:13 - 04:56:13 11743
Indian Springs 04:41:01 -16.2 AT Up 27.6 161.2 Low 04:26:01 - 04:56:01 11729
Beatty 04:41:05 -15.4 AT Up 27.0 160.2 Low 04:26:05 - 04:56:05 11728
Bishop 04:41:10 -14.1 AT Up 26.1 158.7 Low 04:26:10 - 04:56:10 11723
Henderson 04:40:59 -17.0 AT Up 28.3 161.8 Low 04:25:59 - 04:55:59 11711
Patrick 04:40:55 -18.0 Dark Up 29.1 162.8 Low 04:25:55 - 04:55:55 11694
DCO 04:40:52 -18.7 Dark Up 29.6 163.5 Low 04:25:52 - 04:55:52 11688
Lone Pine 04:41:10 -14.8 AT Up 26.9 158.9 Low 04:26:10 - 04:56:10 11685
Searchlight/Boulder City 04:40:59 -17.4 AT Up 28.8 161.8 Low 04:25:59 - 04:55:59 11678
Kingman/Dolan Springs 04:40:56 -18.1 Dark Up 29.3 162.6 Low 04:25:56 - 04:55:56 11677
Laughlin/Bullhead City 04:40:58 -17.8 AT Up 29.2 162.0 Low 04:25:58 - 04:55:58 11666
Mohave Valley 04:40:58 -18.0 Dark Up 29.4 162.0 Low 04:25:58 - 04:55:58 11650
Lake Havasu City 04:40:57 -18.5 Dark Up 29.9 162.2 Low 04:25:57 - 04:55:57 11630
Parker 04:40:57 -18.7 Dark Up 30.2 162.2 Up 04:25:57 - 04:55:57 11609
Blythe 04:40:59 -18.9 Dark Up 30.7 161.8 Up 04:25:59 - 04:55:59 11571
CPSLO 04:41:21 -14.2 AT Up 27.3 156.2 Low 04:26:21 - 04:56:21 11553
Idyllwild 04:41:07 -17.6 AT Up 30.0 159.7 Low 04:26:07 - 04:56:07 11537
Calipatria 04:41:03 -18.7 Dark Up 30.9 160.7 Up 04:26:03 - 04:56:03 11522
Wildwood 04:41:14 -16.3 AT Up 29.1 157.9 Low 04:26:14 - 04:56:14 11521
Yuma 04:40:59 -19.6 Dark Up 31.5 161.5 Up 04:25:59 - 04:55:59 11511

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 2017/12/06 19:06:40 UT

Marc W. Buie, Southwest Research Institute

RECON