메타데이터
| 항목 |
값 |
| Designation |
C/2019 L1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2019-08-11T06:51:01.670400Z |
| Orbit solution date (soln_date, UTC) |
2023-01-14T00:12:29Z |
| Obs used |
103 |
| NEO |
- |
| M1 |
13.500 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-06-12T12:39:55.872000Z |
| Discovery magnitude (MPC) |
20.10 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-07-10.0000000 |
| e |
0.70662278 |
| q (au) |
2.890226 |
| a (au) |
9.851568 |
| i (deg) |
9.993558 |
| Ω (om, deg) |
254.409692 |
| ω (w, deg) |
49.919599 |
| M (ma, deg) |
358.970912 |
밝기
산란 + 전체 선형
$$
M_a = (11.057 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.057 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.790 |
| k |
0.995 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
05:58:12.24 |
+20:04:05.9 |
HIP 28294 |
11.73 |
| 2026-03-26 12:00 |
05:58:14.89 |
+20:04:10.1 |
HIP 28294 |
11.25 |
| 2026-03-27 00:00 |
05:58:17.61 |
+20:04:14.2 |
HIP 28294 |
10.77 |
| 2026-03-27 12:00 |
05:58:20.42 |
+20:04:18.4 |
HIP 28294 |
10.30 |
| 2026-03-28 00:00 |
05:58:23.31 |
+20:04:22.5 |
HIP 28294 |
9.84 |
| 2026-03-28 12:00 |
05:58:26.27 |
+20:04:26.6 |
HIP 28294 |
9.39 |
| 2026-03-29 00:00 |
05:58:29.32 |
+20:04:30.7 |
HIP 28294 |
8.97 |
| 2026-03-29 12:00 |
05:58:32.44 |
+20:04:34.8 |
HIP 28294 |
8.59 |
| 2026-03-30 00:00 |
05:58:35.65 |
+20:04:38.9 |
HIP 28294 |
8.24 |
| 2026-03-30 12:00 |
05:58:38.93 |
+20:04:42.9 |
HIP 28294 |
7.95 |
| 2026-03-31 00:00 |
05:58:42.29 |
+20:04:47.0 |
HIP 28294 |
7.72 |
| 2026-03-31 12:00 |
05:58:45.73 |
+20:04:51.0 |
HIP 28294 |
7.56 |
| 2026-04-01 00:00 |
05:58:49.24 |
+20:04:55.0 |
HIP 28294 |
7.50 |
| 2026-04-01 12:00 |
05:58:52.83 |
+20:04:58.9 |
HIP 28294 |
7.52 |
| 2026-04-02 00:00 |
05:58:56.50 |
+20:05:02.9 |
HIP 28294 |
7.65 |
| 2026-04-02 12:00 |
05:59:00.25 |
+20:05:06.8 |
HIP 28294 |
7.88 |
| 2026-04-03 00:00 |
05:59:04.07 |
+20:05:10.7 |
HIP 28294 |
8.20 |
| 2026-04-03 12:00 |
05:59:07.97 |
+20:05:14.6 |
HIP 28294 |
8.62 |
| 2026-04-04 00:00 |
05:59:11.94 |
+20:05:18.4 |
HIP 28294 |
9.12 |
| 2026-04-04 12:00 |
05:59:15.99 |
+20:05:22.2 |
HIP 28294 |
9.70 |
| 2026-04-05 00:00 |
05:59:20.11 |
+20:05:26.0 |
HIP 28294 |
10.35 |
| 2026-04-05 12:00 |
05:59:24.31 |
+20:05:29.8 |
HIP 28294 |
11.06 |
| 2026-04-06 00:00 |
05:59:28.58 |
+20:05:33.5 |
HIP 28373 |
11.01 |
| 2026-04-06 12:00 |
05:59:32.93 |
+20:05:37.2 |
HIP 28425 |
10.62 |
| 2026-04-07 00:00 |
05:59:37.35 |
+20:05:40.9 |
HIP 28425 |
9.84 |
| 2026-04-07 12:00 |
05:59:41.84 |
+20:05:44.6 |
HIP 28425 |
9.09 |
| 2026-04-08 00:00 |
05:59:46.40 |
+20:05:48.2 |
HIP 28425 |
8.39 |
| 2026-04-08 12:00 |
05:59:51.04 |
+20:05:51.8 |
HIP 28425 |
7.77 |
| 2026-04-09 00:00 |
05:59:55.75 |
+20:05:55.3 |
HIP 28425 |
7.26 |
| 2026-04-09 12:00 |
06:00:00.53 |
+20:05:58.8 |
HIP 28425 |
6.88 |
| 2026-04-10 00:00 |
06:00:05.39 |
+20:06:02.3 |
HIP 28425 |
6.66 |
| 2026-04-10 12:00 |
06:00:10.31 |
+20:06:05.8 |
HIP 28425 |
6.64 |
| 2026-04-11 00:00 |
06:00:15.31 |
+20:06:09.2 |
HIP 28425 |
6.82 |
| 2026-04-11 12:00 |
06:00:20.37 |
+20:06:12.6 |
HIP 28425 |
7.20 |
| 2026-04-12 00:00 |
06:00:25.51 |
+20:06:15.9 |
HIP 28425 |
7.75 |
| 2026-04-12 12:00 |
06:00:30.72 |
+20:06:19.2 |
HIP 28425 |
8.44 |
| 2026-04-13 00:00 |
06:00:35.99 |
+20:06:22.4 |
HIP 28425 |
9.26 |
| 2026-04-13 12:00 |
06:00:41.34 |
+20:06:25.7 |
HIP 28425 |
10.18 |
| 2026-04-14 00:00 |
06:00:46.75 |
+20:06:28.8 |
HIP 28425 |
11.17 |
| 2026-04-14 12:00 |
06:00:52.23 |
+20:06:32.0 |
HIP 28425 |
12.23 |
| 2026-04-15 00:00 |
06:00:57.78 |
+20:06:35.0 |
HIP 28425 |
13.34 |
| 2026-04-15 12:00 |
06:01:03.40 |
+20:06:38.1 |
HIP 28425 |
14.50 |
| 2026-04-16 00:00 |
06:01:09.08 |
+20:06:41.1 |
HIP 28425 |
15.69 |