Event between (493480) 14YZ49 and star GA1000:03613004 with event index number of 249946
Geocentric closest approach at 2020/02/15 09:19:26 UTC
J2000 position of star is 12:35:02.2 +11:21:48
Equinox of date position of star is 12:36:01.2 +11:15:23
Stellar brightness G=15.6,
use SENSEUP=128
Star is 46 degrees from the moon.
Moon is 56% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 39.5 AU from the Sun
and 38.7 AU from the Earth.
The TNO is moving 19.7
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 200 seconds.
The 1-sigma cross-track error in the shadow position is
2580 km.
The sky-plane scale is
28098.5 km/arcsec.
The TNO has an absolute magnitude Hv=5.3
Diameter=524.8 km assuming a 5% albedo -- 26.6 sec chord
Diameter=214.3 km assuming a 30% albedo -- 10.9 sec chord
Dynamical classification is SCATEXTD
Star training set for 493480, (2020/02/15 09:19UT) Object RA Dec mag sep mel Arcturus 14:16:34.9 +19:04:44 0.0 25.45 36 Vindemiatrix 13:03:10.7 +10:51:05 2.8 6.67 41 20 Vir 12:34:04.0 +10:11:05 6.3 1.17 46 PPM 129168 12:36:11.7 +11:26:13 8.5 0.19 46 PPM 129157 12:35:38.8 +11:11:24 8.8 0.12 46 493480 12:36:03.3 +11:15:09 15.6 46 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
4.5 sigma about the mid-time.
The median site spacing is 13.8 km
RECON observability=1.0 and success probability=1.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 09:22:35 | -50.2 | Dark | Up | 47.2 | 146.3 | Up | 09:07:35 - 09:37:35 | 9049 |
| Summerland | 09:22:36 | -50.5 | Dark | Up | 47.3 | 145.7 | Up | 09:07:36 - 09:37:36 | 9013 |
| Penticton | 09:22:35 | -50.5 | Dark | Up | 47.4 | 145.8 | Up | 09:07:35 - 09:37:35 | 9011 |
| Okanagan Falls | 09:22:34 | -50.7 | Dark | Up | 47.6 | 145.7 | Up | 09:07:34 - 09:37:34 | 8994 |
| Oliver | 09:22:34 | -50.8 | Dark | Up | 47.7 | 145.6 | Up | 09:07:34 - 09:37:34 | 8980 |
| Anarchist Mountain Observatory | 09:22:33 | -50.9 | Dark | Up | 47.9 | 145.7 | Up | 09:07:33 - 09:37:33 | 8972 |
| Oroville | 09:22:33 | -51.0 | Dark | Up | 48.0 | 145.6 | Up | 09:07:33 - 09:37:33 | 8963 |
| Tonasket | 09:22:33 | -51.2 | Dark | Up | 48.2 | 145.5 | Up | 09:07:33 - 09:37:33 | 8942 |
| Okanogan | 09:22:33 | -51.6 | Dark | Up | 48.4 | 145.0 | Up | 09:07:33 - 09:37:33 | 8907 |
| Brewster | 09:22:33 | -51.9 | Dark | Up | 48.5 | 144.6 | Up | 09:07:33 - 09:37:33 | 8875 |
| Niwot | 09:21:31 | -51.0 | Dark | Up | 60.2 | 162.6 | Up | 09:06:31 - 09:36:31 | 8850 |
| Manson/Chelan | 09:22:34 | -52.2 | Dark | Up | 48.5 | 144.0 | Up | 09:07:34 - 09:37:34 | 8842 |
| SwRI | 09:21:31 | -51.1 | Dark | Up | 60.3 | 162.4 | Up | 09:06:31 - 09:36:31 | 8837 |
| Entiat | 09:22:34 | -52.4 | Dark | Up | 48.7 | 143.7 | Up | 09:07:34 - 09:37:34 | 8820 |
| Wenatchee | 09:22:34 | -52.6 | Dark | Up | 48.9 | 143.4 | Up | 09:07:34 - 09:37:34 | 8793 |
| Ellensburg | 09:22:34 | -53.1 | Dark | Up | 49.1 | 142.8 | Up | 09:07:34 - 09:37:34 | 8748 |
| Pasco | 09:22:28 | -53.3 | Dark | Up | 50.3 | 144.2 | Up | 09:07:28 - 09:37:28 | 8738 |
| PNWRO | 09:22:27 | -53.4 | Dark | Up | 50.6 | 144.4 | Up | 09:07:27 - 09:37:27 | 8725 |
| Yakima | 09:22:33 | -53.5 | Dark | Up | 49.4 | 142.5 | Up | 09:07:33 - 09:37:33 | 8710 |
| George/Umatilla | 09:22:28 | -53.6 | Dark | Up | 50.5 | 143.7 | Up | 09:07:28 - 09:37:28 | 8699 |
| Toppenish/White Swan | 09:22:32 | -53.6 | Dark | Up | 49.7 | 142.6 | Up | 09:07:32 - 09:37:32 | 8698 |
| Goldendale | 09:22:33 | -54.2 | Dark | Up | 49.9 | 141.6 | Up | 09:07:33 - 09:37:33 | 8631 |
| The Dalles | 09:22:33 | -54.5 | Dark | Up | 49.9 | 140.9 | Up | 09:07:33 - 09:37:33 | 8596 |
| Maupin | 09:22:33 | -54.9 | Dark | Up | 50.3 | 140.8 | Up | 09:07:33 - 09:37:33 | 8562 |
| Madras/Culver | 09:22:32 | -55.4 | Dark | Up | 50.7 | 140.3 | Up | 09:07:32 - 09:37:32 | 8510 |
| Redmond | 09:22:31 | -55.7 | Dark | Up | 51.0 | 139.9 | Up | 09:07:31 - 09:37:31 | 8476 |
| Sisters | 09:22:33 | -55.8 | Dark | Up | 50.8 | 139.4 | Up | 09:07:33 - 09:37:33 | 8461 |
| Bend | 09:22:31 | -55.9 | Dark | Up | 51.1 | 139.5 | Up | 09:07:31 - 09:37:31 | 8450 |
| Oregon Observatory | 09:22:32 | -56.1 | Dark | Up | 51.1 | 139.2 | Up | 09:07:32 - 09:37:32 | 8429 |
| La Pine/Gilchrist | 09:22:31 | -56.3 | Dark | Up | 51.2 | 139.0 | Up | 09:07:31 - 09:37:31 | 8407 |
| North Lake | 09:22:29 | -56.5 | Dark | Up | 51.9 | 139.4 | Up | 09:07:29 - 09:37:29 | 8392 |
| Paisley | 09:22:27 | -56.9 | Dark | Up | 52.4 | 139.5 | Up | 09:07:27 - 09:37:27 | 8357 |
| Lakeview | 09:22:26 | -57.2 | Dark | Up | 52.9 | 139.3 | Up | 09:07:26 - 09:37:26 | 8318 |
| Chiloquin | 09:22:33 | -57.4 | Dark | Up | 51.9 | 137.6 | Up | 09:07:33 - 09:37:33 | 8290 |
| Cedarville | 09:22:23 | -57.7 | Dark | Up | 53.5 | 139.0 | Up | 09:07:23 - 09:37:23 | 8265 |
| Klamath Falls | 09:22:30 | -57.7 | Dark | Up | 52.2 | 137.4 | Up | 09:07:30 - 09:37:30 | 8261 |
| Tulelake | 09:22:29 | -57.8 | Dark | Up | 52.5 | 137.5 | Up | 09:07:29 - 09:37:29 | 8249 |
| Fall River/Burney | 09:22:26 | -58.6 | Dark | Up | 53.2 | 136.8 | Up | 09:07:26 - 09:37:26 | 8168 |
| Susanville | 09:22:23 | -58.9 | Dark | Up | 54.1 | 137.3 | Up | 09:07:23 - 09:37:23 | 8141 |
| Gimple | 09:22:23 | -59.2 | Dark | Up | 54.2 | 136.7 | Up | 09:07:23 - 09:37:23 | 8106 |
| Greenville | 09:22:23 | -59.2 | Dark | Up | 54.1 | 136.6 | Up | 09:07:23 - 09:37:23 | 8103 |
| Reno | 09:22:18 | -59.2 | Dark | Up | 55.1 | 137.6 | Up | 09:07:18 - 09:37:18 | 8097 |
| Portola | 09:22:21 | -59.3 | Dark | Up | 54.6 | 136.9 | Up | 09:07:21 - 09:37:21 | 8093 |
| Quincy | 09:22:23 | -59.4 | Dark | Up | 54.3 | 136.4 | Up | 09:07:23 - 09:37:23 | 8084 |
| Tonopah | 09:22:06 | -59.2 | Dark | Up | 57.6 | 140.0 | Up | 09:07:06 - 09:37:06 | 8079 |
| Yerington | 09:22:15 | -59.4 | Dark | Up | 55.9 | 138.0 | Up | 09:07:15 - 09:37:15 | 8075 |
| Carson City | 09:22:18 | -59.5 | Dark | Up | 55.4 | 137.3 | Up | 09:07:18 - 09:37:18 | 8065 |
| Hawthorne | 09:22:12 | -59.5 | Dark | Up | 56.5 | 138.3 | Up | 09:07:12 - 09:37:12 | 8057 |
| Gardnerville | 09:22:17 | -59.7 | Dark | Up | 55.6 | 137.1 | Up | 09:07:17 - 09:37:17 | 8044 |
| Indian Springs | 09:21:58 | -59.5 | Dark | Up | 59.5 | 140.9 | Up | 09:06:58 - 09:36:58 | 8017 |
| DCO | 09:21:46 | -59.0 | Dark | Up | 61.9 | 143.5 | Up | 09:06:46 - 09:36:46 | 8010 |
| Henderson | 09:21:55 | -59.5 | Dark | Up | 60.2 | 141.4 | Up | 09:06:55 - 09:36:55 | 8003 |
| Patrick | 09:21:48 | -59.3 | Dark | Up | 61.3 | 142.6 | Up | 09:06:48 - 09:36:48 | 8001 |
| Beatty | 09:22:00 | -59.9 | Dark | Up | 58.7 | 139.5 | Up | 09:07:00 - 09:37:00 | 7995 |
| Lee Vining | 09:22:13 | -60.2 | Dark | Up | 56.7 | 137.0 | Up | 09:07:13 - 09:37:13 | 7982 |
| Kingman/Dolan Springs | 09:21:49 | -59.5 | Dark | Up | 61.4 | 142.0 | Up | 09:06:49 - 09:36:49 | 7972 |
| Bishop | 09:22:09 | -60.3 | Dark | Up | 57.5 | 137.5 | Up | 09:07:09 - 09:37:09 | 7960 |
| Searchlight/Boulder City | 09:21:53 | -59.9 | Dark | Up | 60.7 | 140.9 | Up | 09:06:53 - 09:36:53 | 7953 |
| Laughlin/Bullhead City | 09:21:51 | -59.9 | Dark | Up | 61.1 | 141.1 | Up | 09:06:51 - 09:36:51 | 7944 |
| Mohave Valley | 09:21:50 | -60.0 | Dark | Up | 61.3 | 140.8 | Up | 09:06:50 - 09:36:50 | 7919 |
| Lone Pine | 09:22:06 | -60.8 | Dark | Up | 58.2 | 137.1 | Up | 09:07:06 - 09:37:06 | 7905 |
| Lake Havasu City | 09:21:48 | -60.2 | Dark | Up | 61.8 | 140.8 | Up | 09:06:48 - 09:36:48 | 7895 |
| Parker | 09:21:48 | -60.4 | Dark | Up | 62.1 | 140.4 | Up | 09:06:48 - 09:36:48 | 7865 |
| Blythe | 09:21:47 | -60.9 | Dark | Up | 62.3 | 139.2 | Up | 09:06:47 - 09:36:47 | 7801 |
| Yuma | 09:21:44 | -61.5 | Dark | Up | 63.0 | 138.0 | Up | 09:06:44 - 09:36:44 | 7715 |
| Calipatria | 09:21:49 | -61.8 | Dark | Up | 62.1 | 137.0 | Up | 09:06:49 - 09:36:49 | 7709 |
| Idyllwild | 09:21:55 | -62.1 | Dark | Up | 61.0 | 135.8 | Up | 09:06:55 - 09:36:55 | 7705 |
| CPSLO | 09:22:13 | -63.1 | Dark | Up | 57.6 | 131.8 | Up | 09:07:13 - 09:37:13 | 7662 |
| Wildwood | 09:22:02 | -62.9 | Dark | Up | 59.7 | 133.3 | Up | 09:07:02 - 09:37:02 | 7646 |
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 493480, (2020/02/15 09:19UT) Object RA Dec mag sep mel Arcturus 14:15:38.2 +19:10:18 0.0 25.45 36 Vindemiatrix 13:02:10.2 +10:57:33 2.8 6.67 41 20 Vir 12:33:02.8 +10:17:44 6.3 1.17 46 PPM 129168 12:35:10.7 +11:32:51 8.5 0.19 46 PPM 129157 12:34:37.8 +11:18:03 8.8 0.12 46 493480 12:35:02.2 +11:21:48 15.6 46 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:16:32 UT
Marc W. Buie, Southwest Research Institute