RECON: TNO occultation with 98XY95

Event between 98XY95 and star GA1160:02912335 with event index number of 254871

Geocentric closest approach at 2020/04/16 06:23:45 UTC

J2000 position of star is 07:44:46.3 +27:30:14
Equinox of date position of star is 07:45:56.8 +27:27:25
Stellar brightness G=15.3, use SENSEUP=128
Star is 161 degrees from the moon. Moon is 37% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 38.1 AU from the Sun and 38.1 AU from the Earth.
The TNO is moving 7.4 km/sec on the sky relative to the star, or, 1.0 arcsec/hr.
The 1-sigma error in the time of the event is 731 seconds.
The 1-sigma cross-track error in the shadow position is 2330 km.
The sky-plane scale is 27657.3 km/arcsec.

The TNO has an absolute magnitude Hv=6.3
Diameter=328.1 km assuming a 5% albedo -- 44.1 sec chord
Diameter=133.9 km assuming a 30% albedo -- 18.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 98XY95, (2020/04/16 06:24UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:33.3 +27:58:32  1.1  0.53 161
75Sig Gem      07:44:34.6 +28:49:58  5.3  1.42 161
PPM 097936     07:47:07.7 +26:40:29  7.9  0.82 162
PPM 097913     07:45:49.9 +27:25:51  9.3  0.05 161
98XY95         07:46:01.3 +27:27:14 15.3       162
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 1.2 sigma about the mid-time.
The median site spacing is 4.3 km RECON observability=1.0 and success probability=10.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 06:28:39 -39.1 Dark Down 24.0 286.6 Low 06:13:39 - 06:43:39 1875
SwRI 06:28:42 -39.1 Dark Down 24.1 286.6 Low 06:13:42 - 06:43:42 1869
Kelowna 06:26:19 -26.6 Dark Down 35.9 271.4 Up 06:11:19 - 06:41:19 1517
Penticton 06:26:24 -26.9 Dark Down 36.0 271.6 Up 06:11:24 - 06:41:24 1502
Summerland 06:26:20 -26.5 Dark Down 36.2 271.2 Up 06:11:20 - 06:41:20 1501
Anarchist Mountain Observatory 06:26:34 -27.4 Dark Down 35.9 272.1 Up 06:11:34 - 06:41:34 1498
Okanagan Falls 06:26:28 -27.1 Dark Down 36.0 271.7 Up 06:11:28 - 06:41:28 1497
Oliver 06:26:34 -27.2 Dark Down 36.0 271.9 Up 06:11:34 - 06:41:34 1494
Oroville 06:26:37 -27.5 Dark Down 35.9 272.1 Up 06:11:37 - 06:41:37 1494
Tonasket 06:26:38 -27.7 Dark Down 35.9 272.3 Up 06:11:38 - 06:41:38 1488
Okanogan 06:26:42 -28.0 Dark Down 36.0 272.5 Up 06:11:42 - 06:41:42 1474
Brewster 06:26:48 -28.1 Dark Down 36.1 272.5 Up 06:11:48 - 06:41:48 1459
PNWRO 06:27:17 -30.3 Dark Down 35.2 274.7 Up 06:12:17 - 06:42:17 1444
Pasco 06:27:13 -30.0 Dark Down 35.4 274.4 Up 06:12:13 - 06:42:13 1441
Manson/Chelan 06:26:50 -28.2 Dark Down 36.3 272.4 Up 06:11:50 - 06:41:50 1437
Entiat 06:26:51 -28.4 Dark Down 36.3 272.5 Up 06:11:51 - 06:41:51 1428
George/Umatilla 06:27:18 -30.3 Dark Down 35.5 274.5 Up 06:12:18 - 06:42:18 1422
Wenatchee 06:26:55 -28.6 Dark Down 36.4 272.7 Up 06:11:55 - 06:41:55 1418
Ellensburg 06:27:01 -28.9 Dark Down 36.5 272.8 Up 06:12:01 - 06:42:01 1397
Toppenish/White Swan 06:27:10 -29.5 Dark Down 36.3 273.4 Up 06:12:10 - 06:42:10 1387
Yakima 06:27:06 -29.3 Dark Down 36.5 273.1 Up 06:12:06 - 06:42:06 1385
DCO 06:29:54 -42.2 Dark Down 28.5 285.1 Low 06:14:54 - 06:44:54 1359
Goldendale 06:27:17 -29.9 Dark Down 36.6 273.5 Up 06:12:17 - 06:42:17 1352
Patrick 06:29:49 -41.7 Dark Down 29.2 284.6 Low 06:14:49 - 06:44:49 1336
The Dalles 06:27:20 -30.0 Dark Down 36.8 273.5 Up 06:12:20 - 06:42:20 1329
Maupin 06:27:27 -30.4 Dark Down 36.7 273.9 Up 06:12:27 - 06:42:27 1321
Kingman/Dolan Springs 06:29:51 -41.9 Dark Down 29.3 284.6 Low 06:14:51 - 06:44:51 1318
Henderson 06:29:40 -40.8 Dark Down 30.3 283.7 Up 06:14:40 - 06:44:40 1305
Madras/Culver 06:27:34 -30.9 Dark Down 36.6 274.3 Up 06:12:34 - 06:42:34 1303
Laughlin/Bullhead City 06:29:51 -41.8 Dark Down 29.7 284.4 Low 06:14:51 - 06:44:51 1292
Indian Springs 06:29:33 -40.1 Dark Down 31.0 283.0 Up 06:14:33 - 06:44:33 1292
Redmond 06:27:40 -31.2 Dark Down 36.6 274.5 Up 06:12:40 - 06:42:40 1290
Searchlight/Boulder City 06:29:51 -41.4 Dark Down 30.0 284.1 Up 06:14:51 - 06:44:51 1287
Mohave Valley 06:29:55 -42.0 Dark Down 29.6 284.6 Low 06:14:55 - 06:44:55 1281
Lake Havasu City 06:30:02 -42.5 Dark Down 29.3 284.9 Low 06:15:02 - 06:45:02 1278
Bend 06:27:42 -31.3 Dark Down 36.7 274.6 Up 06:12:42 - 06:42:42 1276
Sisters 06:27:38 -31.0 Dark Down 36.9 274.2 Up 06:12:38 - 06:42:38 1271
Tonopah 06:29:12 -38.2 Dark Down 32.5 281.3 Up 06:14:12 - 06:44:12 1271
North Lake 06:27:55 -32.2 Dark Down 36.3 275.5 Up 06:12:55 - 06:42:55 1270
Paisley 06:28:04 -32.8 Dark Down 36.0 276.1 Up 06:13:04 - 06:43:04 1269
Parker 06:30:07 -42.8 Dark Down 29.1 285.1 Low 06:15:07 - 06:45:07 1265
Oregon Observatory 06:27:45 -31.4 Dark Down 36.8 274.6 Up 06:12:45 - 06:42:45 1265
Lakeview 06:28:11 -33.3 Dark Down 35.7 276.6 Up 06:13:11 - 06:43:11 1262
La Pine/Gilchrist 06:27:48 -31.6 Dark Down 36.8 274.8 Up 06:12:48 - 06:42:48 1255
Beatty 06:29:27 -39.4 Dark Down 31.9 282.3 Up 06:14:27 - 06:44:27 1250
Cedarville 06:28:21 -34.0 Dark Down 35.5 277.2 Up 06:13:21 - 06:43:21 1249
Blythe 06:30:14 -43.2 Dark Down 29.2 285.3 Low 06:15:14 - 06:45:14 1229
Hawthorne 06:29:03 -37.3 Dark Down 33.7 280.3 Up 06:14:03 - 06:44:03 1218
Yerington 06:28:57 -36.7 Dark Down 34.2 279.7 Up 06:13:57 - 06:43:57 1209
Chiloquin 06:28:03 -32.5 Dark Down 36.9 275.4 Up 06:13:03 - 06:43:03 1201
Tulelake 06:28:11 -33.2 Dark Down 36.5 276.1 Up 06:13:11 - 06:43:11 1199
Reno 06:28:49 -35.9 Dark Down 34.9 278.9 Up 06:13:49 - 06:43:49 1196
Klamath Falls 06:28:07 -32.8 Dark Down 36.8 275.7 Up 06:13:07 - 06:43:07 1194
Yuma 06:30:24 -44.1 Dark Down 29.0 285.8 Low 06:15:24 - 06:45:24 1188
Bishop 06:29:23 -38.4 Dark Down 33.3 281.2 Up 06:14:23 - 06:44:23 1186
Susanville 06:28:37 -34.8 Dark Down 35.7 277.8 Up 06:13:37 - 06:43:37 1186
Carson City 06:28:53 -36.3 Dark Down 34.8 279.2 Up 06:13:53 - 06:43:53 1184
Gardnerville 06:28:56 -36.5 Dark Down 34.7 279.4 Up 06:13:56 - 06:43:56 1177
Portola 06:28:45 -35.5 Dark Down 35.4 278.3 Up 06:13:45 - 06:43:45 1174
Lone Pine 06:29:31 -39.2 Dark Down 32.8 281.9 Up 06:14:31 - 06:44:31 1173
Lee Vining 06:29:11 -37.6 Dark Down 34.0 280.4 Up 06:14:11 - 06:44:11 1172
Fall River/Burney 06:28:25 -34.0 Dark Down 36.3 276.9 Up 06:13:25 - 06:43:25 1172
Gimple 06:28:38 -35.0 Dark Down 35.8 277.9 Up 06:13:38 - 06:43:38 1165
Greenville 06:28:38 -35.0 Dark Down 35.8 277.8 Up 06:13:38 - 06:43:38 1161
Calipatria 06:30:22 -43.4 Dark Down 29.8 285.2 Low 06:15:22 - 06:45:22 1161
Quincy 06:28:41 -35.2 Dark Down 35.8 278.0 Up 06:13:41 - 06:43:41 1154
Idyllwild 06:30:10 -42.4 Dark Down 31.0 284.3 Up 06:15:10 - 06:45:10 1126
Wildwood 06:30:04 -41.3 Dark Down 32.6 283.2 Up 06:15:04 - 06:45:04 1042
CPSLO 06:29:46 -39.4 Dark Down 34.6 281.5 Up 06:14:46 - 06:44:46 985

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 98XY95, (2020/04/16 06:24UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1  0.53 161
75Sig Gem      07:43:18.8 +28:52:56  5.3  1.42 161
PPM 097936     07:45:53.1 +26:43:31  7.9  0.82 162
PPM 097913     07:44:34.8 +27:28:52  9.3  0.05 161
98XY95         07:44:46.3 +27:30:14 15.3       161
Positions are for J2000

Event circumstances last updated at 2019/01/29 03:48:55 UT

Marc W. Buie, Southwest Research Institute

RECON