RECON: TNO occultation with 07TA418

Event between 07TA418 and star GA0880:00335449 with event index number of 152591

Geocentric closest approach at 2018/10/24 10:53:08 UTC

J2000 position of star is 03:56:26.9 -00:44:41
Equinox of date position of star is 03:57:24.4 -00:41:29
Stellar brightness G=15.3, use SENSEUP=128
Star is 32 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 36.0 AU from the Sun and 35.2 AU from the Earth.
The TNO is moving 21.4 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 420 seconds.
The 1-sigma cross-track error in the shadow position is 4371 km.
The sky-plane scale is 25514.8 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=223.9 km assuming a 5% albedo -- 10.5 sec chord
Diameter=91.4 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 07TA418, (2018/10/24 10:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.1 +16:32:44  0.8 19.81  42
Menkar         03:03:15.9 +04:09:45  2.5 14.37  18
35 Eri         04:02:29.3 -01:29:53  5.3  1.50  33
PPM 175399     03:53:14.7 -00:36:02  7.1  1.04  31
PPM 175416     03:57:49.4 -00:49:57  8.6  0.18  32
07TA418        03:57:24.5 -00:41:28 15.3        32
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 2.1 sigma about the mid-time.
The median site spacing is 18.8 km RECON observability=1.0 and success probability=9.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Rutland 10:50:51 -35.8 Dark Up 37.3 201.6 Up 10:35:51 - 11:05:51 -1168
Penticton 10:50:51 -36.0 Dark Up 37.7 201.5 Up 10:35:51 - 11:05:51 -1191
Okanagan Falls 10:50:51 -36.1 Dark Up 37.9 201.5 Up 10:35:51 - 11:05:51 -1205
Southern Okanagan 10:50:51 -36.2 Dark Up 38.0 201.6 Up 10:35:51 - 11:05:51 -1218
Oroville 10:50:50 -36.2 Dark Up 38.2 201.8 Up 10:35:50 - 11:05:50 -1240
Tonasket 10:50:50 -36.3 Dark Up 38.4 201.9 Up 10:35:50 - 11:05:50 -1257
Okanogan 10:50:51 -36.6 Dark Up 38.8 201.8 Up 10:35:51 - 11:05:51 -1279
Brewster 10:50:52 -36.8 Dark Up 39.1 201.6 Up 10:35:52 - 11:05:52 -1294
Manson/Chelan 10:50:53 -37.1 Dark Up 39.4 201.2 Up 10:35:53 - 11:05:53 -1301
Entiat 10:50:53 -37.3 Dark Up 39.6 201.2 Up 10:35:53 - 11:05:53 -1316
Wenatchee 10:50:54 -37.4 Dark Up 39.8 201.1 Up 10:35:54 - 11:05:54 -1333
Ellensburg 10:50:55 -37.8 Dark Up 40.3 201.0 Up 10:35:55 - 11:05:55 -1359
Yakima 10:50:54 -38.0 Dark Up 40.7 201.1 Up 10:35:54 - 11:05:54 -1390
Toppenish/White Swan 10:50:54 -37.9 Dark Up 40.8 201.4 Up 10:35:54 - 11:05:54 -1412
Goldendale 10:50:56 -38.4 Dark Up 41.4 201.0 Up 10:35:56 - 11:05:56 -1443
The Dalles 10:50:57 -38.8 Dark Up 41.7 200.6 Up 10:35:57 - 11:05:57 -1451
Pasco 10:50:51 -37.2 Dark Up 40.6 203.0 Up 10:35:51 - 11:05:51 -1456
George/Umatilla 10:50:51 -37.5 Dark Up 41.0 202.9 Up 10:35:51 - 11:05:51 -1477
PNWRO 10:50:50 -37.2 Dark Up 40.8 203.4 Up 10:35:50 - 11:05:50 -1482
Maupin 10:50:57 -38.9 Dark Up 42.1 200.9 Up 10:35:57 - 11:05:57 -1487
Madras/Culver 10:50:58 -39.2 Dark Up 42.6 201.0 Up 10:35:58 - 11:05:58 -1529
Sisters 10:50:59 -39.6 Dark Up 43.1 200.5 Up 10:35:59 - 11:05:59 -1543
Redmond 10:50:58 -39.3 Dark Up 43.0 201.1 Up 10:35:58 - 11:05:58 -1556
Bend 10:50:58 -39.5 Dark Up 43.2 201.0 Up 10:35:58 - 11:05:58 -1570
Oregon Observatory 10:50:58 -39.7 Dark Up 43.4 200.8 Up 10:35:58 - 11:05:58 -1580
La Pine/Gilchrist 10:50:59 -39.8 Dark Up 43.6 200.8 Up 10:35:59 - 11:05:59 -1595
North Lake 10:50:57 -39.6 Dark Up 43.9 201.8 Up 10:35:57 - 11:05:57 -1648
Chiloquin 10:51:01 -40.5 Dark Up 44.7 200.7 Up 10:36:01 - 11:06:01 -1675
Paisley 10:50:56 -39.6 Dark Up 44.3 202.5 Up 10:35:56 - 11:05:56 -1704
Klamath Falls 10:51:01 -40.6 Dark Up 45.0 201.0 Up 10:36:01 - 11:06:01 -1706
Tulelake 10:51:01 -40.5 Dark Up 45.2 201.5 Up 10:36:01 - 11:06:01 -1737
Lakeview 10:50:56 -39.7 Dark Up 44.7 202.9 Up 10:35:56 - 11:05:56 -1751
Cedarville 10:50:56 -39.8 Dark Up 45.2 203.4 Up 10:35:56 - 11:05:56 -1812
Fall River/Burney 10:51:01 -40.8 Dark Up 46.0 201.9 Up 10:36:01 - 11:06:01 -1815
Susanville 10:50:58 -40.5 Dark Up 46.4 203.2 Up 10:35:58 - 11:05:58 -1891
Greenville 10:50:59 -40.9 Dark Up 46.7 202.9 Up 10:35:59 - 11:05:59 -1905
Gimple 10:50:59 -40.8 Dark Up 46.7 203.0 Up 10:35:59 - 11:05:59 -1908
Quincy 10:50:59 -40.9 Dark Up 46.9 203.0 Up 10:35:59 - 11:05:59 -1923
Portola 10:50:58 -40.6 Dark Up 46.9 203.7 Up 10:35:58 - 11:05:58 -1948
Reno 10:50:55 -40.3 Dark Up 46.9 204.7 Up 10:35:55 - 11:05:55 -1991
Carson City 10:50:56 -40.4 Dark Up 47.3 204.9 Up 10:35:56 - 11:05:56 -2023
Gardnerville 10:50:56 -40.4 Dark Up 47.5 205.1 Up 10:35:56 - 11:05:56 -2045
Yerington 10:50:53 -40.0 Dark Up 47.2 205.9 Up 10:35:53 - 11:05:53 -2059
Hawthorne 10:50:52 -39.8 Dark Up 47.5 206.8 Up 10:35:52 - 11:05:52 -2116
Lee Vining 10:50:54 -40.3 Dark Up 48.1 206.4 Up 10:35:54 - 11:05:54 -2151
Tonopah 10:50:47 -38.9 Dark Up 47.4 209.0 Up 10:35:47 - 11:05:47 -2201
Bishop 10:50:51 -39.9 Dark Up 48.4 207.7 Up 10:35:51 - 11:05:51 -2226
Lone Pine 10:50:51 -39.9 Dark Up 49.0 208.6 Up 10:35:51 - 11:05:51 -2305
Beatty 10:50:47 -38.8 Dark Up 48.2 210.2 Up 10:35:47 - 11:05:47 -2319
CPSLO 10:51:02 -42.3 Dark Up 51.1 205.6 Up 10:36:02 - 11:06:02 -2338
Niwot 10:50:07 -29.4 Dark Up 40.3 222.5 Up 10:35:07 - 11:05:07 -2370
Indian Springs 10:50:43 -38.1 Dark Up 48.0 211.9 Up 10:35:43 - 11:05:43 -2382
Henderson 10:50:40 -37.7 Dark Up 48.2 213.1 Up 10:35:40 - 11:05:40 -2453
Searchlight/Boulder City 10:50:40 -37.8 Dark Up 48.6 213.6 Up 10:35:40 - 11:05:40 -2507
Wildwood 10:50:55 -41.0 Dark Up 51.4 209.3 Up 10:35:55 - 11:05:55 -2515
Patrick 10:50:36 -37.0 Dark Up 48.2 215.0 Up 10:35:36 - 11:05:36 -2545
Laughlin/Bullhead City 10:50:39 -37.6 Dark Up 48.7 214.2 Up 10:35:39 - 11:05:39 -2546
Kingman/Dolan Springs 10:50:37 -37.2 Dark Up 48.5 214.9 Up 10:35:37 - 11:05:37 -2560
Mohave Valley 10:50:39 -37.6 Dark Up 49.0 214.4 Up 10:35:39 - 11:05:39 -2571
DCO 10:50:34 -36.5 Dark Up 48.1 216.1 Up 10:35:34 - 11:05:34 -2596
Idyllwild 10:50:47 -39.6 Dark Up 50.9 212.2 Up 10:35:47 - 11:05:47 -2609
Lake Havasu City 10:50:40 -37.5 Dark Up 49.2 215.0 Up 10:35:40 - 11:05:40 -2616
Parker 10:50:38 -37.6 Dark Up 49.4 215.3 Up 10:35:38 - 11:05:38 -2650
Blythe 10:50:40 -37.9 Dark Up 50.0 215.2 Up 10:35:40 - 11:05:40 -2689
Calipatria 10:50:44 -38.8 Dark Up 50.9 214.3 Up 10:35:44 - 11:05:44 -2705
Yuma 10:50:40 -38.2 Dark Up 50.8 215.8 Up 10:35:40 - 11:05:40 -2775

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 07TA418, (2018/10/24 10:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 19.81  42
Menkar         03:02:16.8 +04:05:21  2.5 14.37  18
35 Eri         04:01:32.1 -01:32:59  5.3  1.50  33
PPM 175399     03:52:17.1 -00:39:20  7.1  1.04  31
PPM 175416     03:56:51.9 -00:53:10  8.6  0.18  32
07TA418        03:56:26.9 -00:44:41 15.3        32
Positions are for J2000

Event circumstances last updated at 2018/10/08 19:31:39 UT

Marc W. Buie, Southwest Research Institute

RECON