RECON: TNO occultation with 29981

Event between (29981) 99TD10 and star GA1060:02572880 with event index number of 155259

Geocentric closest approach at 2018/11/03 07:28:34 UTC

J2000 position of star is 07:01:22.1 +16:40:16
Equinox of date position of star is 07:02:25.9 +16:38:38
Stellar brightness G=13.1, use SENSEUP=32
Star is 61 degrees from the moon. Moon is 22% illuminated.
TNO apparent brightness V=23.6

[RECON map]
TNO is 30.2 AU from the Sun and 29.7 AU from the Earth.
The TNO is moving 9.3 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 866 seconds.
The 1-sigma cross-track error in the shadow position is 1632 km.
The sky-plane scale is 21550.3 km/arcsec.

The TNO has an absolute magnitude Hv=8.7
Diameter=109.7 km assuming a 5% albedo -- 11.8 sec chord
Diameter=44.8 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 29981, (2018/11/03 07:29UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:28.0 +27:58:45  1.1 15.22  52
Alhena         06:38:48.0 +16:22:54  1.9  5.68  67
PPM 123373     07:01:22.8 +15:30:27  6.4  1.16  61
PPM 123427     07:03:38.5 +16:38:44  7.6  0.28  61
29981          07:02:27.3 +16:38:35 13.1        61
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 1.0 sigma about the mid-time.
The median site spacing is 17.2 km RECON observability=1.0 and success probability=19.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 07:33:59 -55.5 Dark Down 26.2 94.9 Low 07:18:59 - 07:48:59 -757
Oroville 07:34:04 -56.1 Dark Down 26.4 94.7 Low 07:19:04 - 07:49:04 -798
Tonasket 07:34:07 -56.3 Dark Down 26.4 94.6 Low 07:19:07 - 07:49:07 -813
Okanogan 07:34:10 -56.7 Dark Down 26.4 94.3 Low 07:19:10 - 07:49:10 -830
Brewster 07:34:13 -56.9 Dark Down 26.2 94.0 Low 07:19:13 - 07:49:13 -843
Manson/Chelan 07:34:16 -57.1 Dark Down 26.0 93.7 Low 07:19:16 - 07:49:16 -848
Entiat 07:34:19 -57.3 Dark Down 26.0 93.5 Low 07:19:19 - 07:49:19 -860
Wenatchee 07:34:21 -57.6 Dark Down 26.0 93.3 Low 07:19:21 - 07:49:21 -874
Ellensburg 07:34:25 -58.0 Dark Down 25.8 93.0 Low 07:19:25 - 07:49:25 -896
Yakima 07:34:30 -58.4 Dark Down 25.9 92.8 Low 07:19:30 - 07:49:30 -923
Toppenish/White Swan 07:34:31 -58.6 Dark Down 26.0 92.8 Low 07:19:31 - 07:49:31 -941
Goldendale 07:34:37 -59.1 Dark Down 25.7 92.2 Low 07:19:37 - 07:49:37 -968
The Dalles 07:34:40 -59.3 Dark Down 25.5 91.9 Low 07:19:40 - 07:49:40 -974
Pasco 07:34:29 -58.8 Dark Down 26.9 93.7 Low 07:19:29 - 07:49:29 -981
George/Umatilla 07:34:33 -59.1 Dark Down 26.7 93.4 Low 07:19:33 - 07:49:33 -999
PNWRO 07:34:31 -59.1 Dark Down 27.0 93.7 Low 07:19:31 - 07:49:31 -1004
Maupin 07:34:44 -59.8 Dark Down 25.6 91.8 Low 07:19:44 - 07:49:44 -1005
Madras/Culver 07:34:49 -60.3 Dark Down 25.6 91.5 Low 07:19:49 - 07:49:49 -1041
Sisters 07:34:53 -60.6 Dark Down 25.3 91.0 Low 07:19:53 - 07:49:53 -1053
Redmond 07:34:53 -60.7 Dark Down 25.6 91.3 Low 07:19:53 - 07:49:53 -1065
Bend 07:34:55 -60.9 Dark Down 25.5 91.1 Low 07:19:55 - 07:49:55 -1076
Oregon Observatory 07:34:56 -61.0 Dark Down 25.4 90.9 Low 07:19:56 - 07:49:56 -1085
La Pine/Gilchrist 07:34:59 -61.2 Dark Down 25.4 90.8 Low 07:19:59 - 07:49:59 -1098
North Lake 07:35:01 -61.7 Dark Down 25.8 91.0 Low 07:20:01 - 07:50:01 -1144
Chiloquin 07:35:10 -62.3 Dark Down 25.1 90.1 Low 07:20:10 - 07:50:10 -1167
Paisley 07:35:06 -62.3 Dark Down 26.1 91.0 Low 07:20:06 - 07:50:06 -1193
Klamath Falls 07:35:13 -62.6 Dark Down 25.2 90.0 Low 07:20:13 - 07:50:13 -1194
Tulelake 07:35:14 -62.9 Dark Down 25.4 90.0 Low 07:20:14 - 07:50:14 -1222
Lakeview 07:35:09 -62.8 Dark Down 26.3 90.9 Low 07:20:09 - 07:50:09 -1235
Cedarville 07:35:15 -63.5 Dark Down 26.4 90.7 Low 07:20:15 - 07:50:15 -1288
Fall River/Burney 07:35:22 -63.9 Dark Down 25.5 89.7 Low 07:20:22 - 07:50:22 -1290
Susanville 07:35:26 -64.5 Dark Down 26.1 89.9 Low 07:20:26 - 07:50:26 -1358
Greenville 07:35:29 -64.8 Dark Down 25.9 89.5 Low 07:20:29 - 07:50:29 -1370
Gimple 07:35:29 -64.8 Dark Down 25.9 89.6 Low 07:20:29 - 07:50:29 -1373
Quincy 07:35:31 -65.0 Dark Down 25.9 89.5 Low 07:20:31 - 07:50:31 -1385
Portola 07:35:31 -65.2 Dark Down 26.3 89.7 Low 07:20:31 - 07:50:31 -1408
Reno 07:35:31 -65.5 Dark Down 26.8 90.0 Low 07:20:31 - 07:50:31 -1447
Carson City 07:35:34 -65.8 Dark Down 26.8 89.8 Low 07:20:34 - 07:50:34 -1475
Gardnerville 07:35:36 -66.1 Dark Down 26.8 89.7 Low 07:20:36 - 07:50:36 -1495
Yerington 07:35:33 -66.1 Dark Down 27.3 90.1 Low 07:20:33 - 07:50:33 -1508
Hawthorne 07:35:35 -66.5 Dark Down 27.7 90.2 Low 07:20:35 - 07:50:35 -1559
Lee Vining 07:35:43 -67.1 Dark Down 27.3 89.6 Low 07:20:43 - 07:50:43 -1589
Tonopah 07:35:35 -67.0 Dark Down 28.8 90.8 Low 07:20:35 - 07:50:35 -1636
Bishop 07:35:45 -67.7 Dark Down 27.9 89.8 Low 07:20:45 - 07:50:45 -1658
Lone Pine 07:35:50 -68.5 Dark Down 28.2 89.6 Low 07:20:50 - 07:50:50 -1728
Beatty 07:35:43 -68.1 Dark Down 29.2 90.5 Low 07:20:43 - 07:50:43 -1742
CPSLO 07:36:09 -69.6 Dark Down 26.1 87.5 Low 07:21:09 - 07:51:09 -1757
Indian Springs 07:35:42 -68.4 Dark Down 30.1 91.0 Up 07:20:42 - 07:50:42 -1801
Niwot 07:34:31 -62.7 Dark Down 37.7 100.2 Up 07:19:31 - 07:49:31 -1816
Henderson 07:35:44 -68.9 Dark Down 30.7 91.1 Up 07:20:44 - 07:50:44 -1865
Searchlight/Boulder City 07:35:49 -69.4 Dark Down 30.7 90.8 Up 07:20:49 - 07:50:49 -1915
Wildwood 07:36:13 -71.0 Dark Down 27.8 88.0 Low 07:21:13 - 07:51:13 -1918
Laughlin/Bullhead City 07:35:49 -69.7 Dark Down 31.0 90.8 Up 07:20:49 - 07:50:49 -1950
Patrick 07:35:45 -69.3 Dark Down 31.6 91.4 Up 07:20:45 - 07:50:45 -1951
Kingman/Dolan Springs 07:35:47 -69.6 Dark Down 31.4 91.1 Up 07:20:47 - 07:50:47 -1963
Mohave Valley 07:35:51 -69.9 Dark Down 31.0 90.7 Up 07:20:51 - 07:50:51 -1973
DCO 07:35:44 -69.5 Dark Down 32.2 91.6 Up 07:20:44 - 07:50:44 -1998
Idyllwild 07:36:09 -71.3 Dark Down 29.3 88.8 Low 07:21:09 - 07:51:09 -2006
Lake Havasu City 07:35:54 -70.3 Dark Down 31.3 90.6 Up 07:20:54 - 07:50:54 -2014
Parker 07:35:56 -70.6 Dark Down 31.3 90.4 Up 07:20:56 - 07:50:56 -2045
Blythe 07:36:01 -71.2 Dark Down 31.1 89.9 Up 07:21:01 - 07:51:01 -2080
Calipatria 07:36:09 -71.8 Dark Down 30.3 89.1 Up 07:21:09 - 07:51:09 -2094
Yuma 07:36:08 -72.1 Dark Down 31.0 89.3 Up 07:21:08 - 07:51:08 -2158

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 29981, (2018/11/03 07:29UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 15.22  52
Alhena         06:37:42.8 +16:23:57  1.9  5.68  67
PPM 123373     07:00:18.1 +15:32:06  6.4  1.16  61
PPM 123427     07:02:33.3 +16:40:27  7.6  0.28  61
29981          07:01:22.1 +16:40:16 13.1        61
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:33:00 UT

Marc W. Buie, Southwest Research Institute

RECON