메타데이터
| 항목 |
값 |
| Designation |
C/2014 W11 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2015-06-17T08:54:15.324480Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:04Z |
| Obs used |
1038 |
| NEO |
- |
| M1 |
10.300 |
| K1 |
6.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-06-01.0000000 |
| e |
0.65023088 |
| q (au) |
3.426807 |
| a (au) |
9.797339 |
| i (deg) |
12.706625 |
| Ω (om, deg) |
295.942382 |
| ω (w, deg) |
225.644803 |
| M (ma, deg) |
359.473841 |
밝기
산란 + 전체 선형
$$
M_a = (7.093 + 3.562\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.093 |
| n |
3.562 |
| gf |
1.000 |
| gb |
-0.500 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2014-10-22 |
2015-06-12 |
+82.2821 |
-44.843 |
| 2015-06-27 |
2017-05-27 |
+12.3719 |
-7.898 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
21:49:30.34 |
-00:05:39.2 |
HIP 107655 |
24.46 |
| 2026-07-29 12:00 |
21:49:23.94 |
-00:05:56.3 |
HIP 107655 |
23.60 |
| 2026-07-30 00:00 |
21:49:17.51 |
-00:06:13.8 |
HIP 107655 |
22.83 |
| 2026-07-30 12:00 |
21:49:11.07 |
-00:06:31.7 |
HIP 107655 |
22.15 |
| 2026-07-31 00:00 |
21:49:04.59 |
-00:06:49.8 |
HIP 107655 |
21.58 |
| 2026-07-31 12:00 |
21:48:58.10 |
-00:07:08.4 |
HIP 107655 |
21.12 |
| 2026-08-01 00:00 |
21:48:51.58 |
-00:07:27.2 |
HIP 107655 |
20.79 |
| 2026-08-01 12:00 |
21:48:45.05 |
-00:07:46.4 |
HIP 107655 |
20.59 |
| 2026-08-02 00:00 |
21:48:38.49 |
-00:08:06.0 |
HIP 107655 |
20.53 |
| 2026-08-02 12:00 |
21:48:31.91 |
-00:08:25.9 |
HIP 107655 |
20.61 |
| 2026-08-03 00:00 |
21:48:25.31 |
-00:08:46.1 |
HIP 107655 |
20.83 |
| 2026-08-03 12:00 |
21:48:18.69 |
-00:09:06.6 |
HIP 107655 |
21.19 |
| 2026-08-04 00:00 |
21:48:12.06 |
-00:09:27.5 |
HIP 107655 |
21.68 |
| 2026-08-04 12:00 |
21:48:05.40 |
-00:09:48.7 |
HIP 107655 |
22.29 |
| 2026-08-05 00:00 |
21:47:58.73 |
-00:10:10.2 |
HIP 107655 |
23.02 |
| 2026-08-05 12:00 |
21:47:52.04 |
-00:10:32.0 |
HIP 107577 |
23.01 |
| 2026-08-06 00:00 |
21:47:45.34 |
-00:10:54.2 |
HIP 107577 |
22.03 |
| 2026-08-06 12:00 |
21:47:38.61 |
-00:11:16.7 |
HIP 107577 |
21.15 |
| 2026-08-07 00:00 |
21:47:31.88 |
-00:11:39.5 |
HIP 107577 |
20.37 |
| 2026-08-07 12:00 |
21:47:25.13 |
-00:12:02.6 |
HIP 107577 |
19.70 |
| 2026-08-08 00:00 |
21:47:18.37 |
-00:12:26.0 |
HIP 107577 |
19.16 |
| 2026-08-08 12:00 |
21:47:11.59 |
-00:12:49.7 |
HIP 107577 |
18.76 |
| 2026-08-09 00:00 |
21:47:04.80 |
-00:13:13.7 |
HIP 107577 |
18.51 |
| 2026-08-09 12:00 |
21:46:58.00 |
-00:13:38.1 |
HIP 107577 |
18.42 |
| 2026-08-10 00:00 |
21:46:51.19 |
-00:14:02.7 |
HIP 107577 |
18.49 |
| 2026-08-10 12:00 |
21:46:44.37 |
-00:14:27.6 |
HIP 107577 |
18.72 |
| 2026-08-11 00:00 |
21:46:37.54 |
-00:14:52.8 |
HIP 107413 |
18.93 |
| 2026-08-11 12:00 |
21:46:30.70 |
-00:15:18.3 |
HIP 107413 |
17.29 |
| 2026-08-12 00:00 |
21:46:23.85 |
-00:15:44.1 |
HIP 107413 |
15.68 |
| 2026-08-12 12:00 |
21:46:17.00 |
-00:16:10.2 |
HIP 107413 |
14.11 |
| 2026-08-13 00:00 |
21:46:10.14 |
-00:16:36.5 |
HIP 107413 |
12.59 |
| 2026-08-13 12:00 |
21:46:03.27 |
-00:17:03.2 |
HIP 107413 |
11.14 |
| 2026-08-14 00:00 |
21:45:56.40 |
-00:17:30.1 |
HIP 107413 |
9.81 |
| 2026-08-14 12:00 |
21:45:49.52 |
-00:17:57.3 |
HIP 107413 |
8.63 |
| 2026-08-15 00:00 |
21:45:42.64 |
-00:18:24.7 |
HIP 107413 |
7.69 |
| 2026-08-15 12:00 |
21:45:35.76 |
-00:18:52.4 |
HIP 107413 |
7.08 |
| 2026-08-16 00:00 |
21:45:28.88 |
-00:19:20.4 |
HIP 107413 |
6.90 |
| 2026-08-16 12:00 |
21:45:21.99 |
-00:19:48.6 |
HIP 107413 |
7.18 |
| 2026-08-17 00:00 |
21:45:15.10 |
-00:20:17.0 |
HIP 107413 |
7.86 |
| 2026-08-17 12:00 |
21:45:08.21 |
-00:20:45.8 |
HIP 107413 |
8.86 |
| 2026-08-18 00:00 |
21:45:01.33 |
-00:21:14.7 |
HIP 107395 |
9.49 |
| 2026-08-18 12:00 |
21:44:54.44 |
-00:21:43.9 |
HIP 107395 |
9.59 |
| 2026-08-19 00:00 |
21:44:47.56 |
-00:22:13.3 |
HIP 107395 |
10.01 |