메타데이터
| 항목 |
값 |
| Designation |
C/2019 E3 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-11-14T09:43:44.754240Z |
| Orbit solution date (soln_date, UTC) |
2026-09-08T14:22:33Z |
| Obs used |
972 |
| NEO |
- |
| M1 |
6.100 |
| K1 |
6.500 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-03-05T10:14:33.792000Z |
| Discovery magnitude (MPC) |
18.45 o |
| Discovery observatory (MPC) |
T08 · ATLAS-MLO, Mauna Loa |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2022-08-22.0000000 |
| e |
1.00093870 |
| q (au) |
10.313385 |
| a (au) |
-10986.834186 |
| i (deg) |
84.297512 |
| Ω (om, deg) |
347.253674 |
| ω (w, deg) |
280.665924 |
| M (ma, deg) |
-0.000385 |
밝기
산란 + 전체 선형
$$
M_a = (2.549 + 3.593\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
2.549 |
| n |
3.593 |
| gf |
0.999 |
| gb |
-0.503 |
| k |
1.000 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
00:14:11.36 |
-45:23:48.5 |
HIP 1044 |
17.92 |
| 2026-09-20 12:00 |
00:13:54.94 |
-45:23:45.4 |
HIP 1044 |
16.07 |
| 2026-09-21 00:00 |
00:13:38.52 |
-45:23:41.2 |
HIP 1044 |
14.55 |
| 2026-09-21 12:00 |
00:13:22.09 |
-45:23:35.9 |
HIP 1044 |
13.46 |
| 2026-09-22 00:00 |
00:13:05.67 |
-45:23:29.5 |
HIP 1044 |
12.92 |
| 2026-09-22 12:00 |
00:12:49.24 |
-45:23:22.0 |
HIP 1044 |
13.00 |
| 2026-09-23 00:00 |
00:12:32.82 |
-45:23:13.4 |
HIP 1044 |
13.69 |
| 2026-09-23 12:00 |
00:12:16.40 |
-45:23:03.6 |
HIP 1044 |
14.90 |
| 2026-09-24 00:00 |
00:11:59.98 |
-45:22:52.8 |
HIP 1044 |
16.51 |
| 2026-09-24 12:00 |
00:11:43.58 |
-45:22:40.8 |
HIP 1044 |
18.43 |
| 2026-09-25 00:00 |
00:11:27.18 |
-45:22:27.7 |
HIP 1044 |
20.57 |
| 2026-09-25 12:00 |
00:11:10.79 |
-45:22:13.4 |
HIP 1044 |
22.86 |
| 2026-09-26 00:00 |
00:10:54.41 |
-45:21:58.0 |
HIP 1044 |
25.27 |
| 2026-09-26 12:00 |
00:10:38.04 |
-45:21:41.5 |
HIP 765 |
26.47 |
| 2026-09-27 00:00 |
00:10:21.69 |
-45:21:23.9 |
HIP 654 |
24.57 |
| 2026-09-27 12:00 |
00:10:05.35 |
-45:21:05.1 |
HIP 654 |
21.74 |
| 2026-09-28 00:00 |
00:09:49.03 |
-45:20:45.3 |
HIP 654 |
18.92 |
| 2026-09-28 12:00 |
00:09:32.73 |
-45:20:24.2 |
HIP 654 |
16.13 |
| 2026-09-29 00:00 |
00:09:16.44 |
-45:20:02.0 |
HIP 654 |
13.39 |
| 2026-09-29 12:00 |
00:09:00.18 |
-45:19:38.7 |
HIP 654 |
10.73 |
| 2026-09-30 00:00 |
00:08:43.94 |
-45:19:14.3 |
HIP 654 |
8.23 |
| 2026-09-30 12:00 |
00:08:27.73 |
-45:18:48.7 |
HIP 654 |
6.11 |
| 2026-10-01 00:00 |
00:08:11.54 |
-45:18:22.0 |
HIP 654 |
4.86 |
| 2026-10-01 12:00 |
00:07:55.37 |
-45:17:54.1 |
HIP 654 |
5.16 |
| 2026-10-02 00:00 |
00:07:39.24 |
-45:17:25.1 |
HIP 654 |
6.81 |
| 2026-10-02 12:00 |
00:07:23.13 |
-45:16:54.9 |
HIP 654 |
9.11 |
| 2026-10-03 00:00 |
00:07:07.06 |
-45:16:23.6 |
HIP 624 |
10.67 |
| 2026-10-03 12:00 |
00:06:51.01 |
-45:15:51.2 |
HIP 624 |
11.93 |
| 2026-10-04 00:00 |
00:06:35.01 |
-45:15:17.6 |
HIP 624 |
13.68 |
| 2026-10-04 12:00 |
00:06:19.03 |
-45:14:42.8 |
HIP 624 |
15.74 |
| 2026-10-05 00:00 |
00:06:03.10 |
-45:14:06.9 |
HIP 624 |
18.02 |
| 2026-10-05 12:00 |
00:05:47.20 |
-45:13:29.9 |
HIP 309 |
19.83 |
| 2026-10-06 00:00 |
00:05:31.35 |
-45:12:51.7 |
HIP 309 |
17.26 |
| 2026-10-06 12:00 |
00:05:15.53 |
-45:12:12.3 |
HIP 309 |
14.80 |
| 2026-10-07 00:00 |
00:04:59.76 |
-45:11:31.9 |
HIP 309 |
12.53 |
| 2026-10-07 12:00 |
00:04:44.03 |
-45:10:50.2 |
HIP 309 |
10.57 |
| 2026-10-08 00:00 |
00:04:28.35 |
-45:10:07.4 |
HIP 309 |
9.11 |
| 2026-10-08 12:00 |
00:04:12.71 |
-45:09:23.5 |
HIP 309 |
8.42 |
| 2026-10-09 00:00 |
00:03:57.13 |
-45:08:38.4 |
HIP 309 |
8.68 |
| 2026-10-09 12:00 |
00:03:41.59 |
-45:07:52.2 |
HIP 309 |
9.81 |
| 2026-10-10 00:00 |
00:03:26.11 |
-45:07:04.9 |
HIP 309 |
11.56 |
| 2026-10-10 12:00 |
00:03:10.68 |
-45:06:16.4 |
HIP 309 |
13.69 |
| 2026-10-11 00:00 |
00:02:55.30 |
-45:05:26.7 |
HIP 309 |
16.05 |