메타데이터
| 항목 |
값 |
| Designation |
317P/WISE |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-08-08T11:39:00.054720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:23Z |
| Obs used |
93 |
| NEO |
Yes |
| M1 |
19.500 |
| K1 |
4.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-05-21.0000000 |
| e |
0.58023673 |
| q (au) |
1.241121 |
| a (au) |
2.956716 |
| i (deg) |
11.962566 |
| Ω (om, deg) |
275.692894 |
| ω (w, deg) |
334.741411 |
| M (ma, deg) |
203.072609 |
밝기
산란 + 전체 선형
$$
M_a = (20.000 + 3.235\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
20.000 |
| n |
3.235 |
| gf |
0.999 |
| gb |
-0.794 |
| k |
0.923 |
| δ90 |
3.149 |
| 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) |
| 2026-03-26 00:00 |
23:05:40.01 |
+02:11:44.0 |
HIP 114021 |
26.15 |
| 2026-03-26 12:00 |
23:06:38.21 |
+02:19:05.9 |
HIP 114273 |
32.70 |
| 2026-03-27 00:00 |
23:07:36.26 |
+02:26:27.1 |
HIP 114273 |
24.77 |
| 2026-03-27 12:00 |
23:08:34.13 |
+02:33:47.6 |
HIP 114273 |
26.19 |
| 2026-03-28 00:00 |
23:09:31.84 |
+02:41:07.3 |
HIP 114335 |
32.54 |
| 2026-03-28 12:00 |
23:10:29.39 |
+02:48:26.2 |
HIP 114488 |
23.47 |
| 2026-03-29 00:00 |
23:11:26.78 |
+02:55:44.3 |
HIP 114488 |
13.85 |
| 2026-03-29 12:00 |
23:12:24.00 |
+03:03:01.7 |
HIP 114488 |
18.67 |
| 2026-03-30 00:00 |
23:13:21.06 |
+03:10:18.3 |
HIP 114696 |
13.58 |
| 2026-03-30 12:00 |
23:14:17.96 |
+03:17:34.2 |
HIP 114696 |
3.61 |
| 2026-03-31 00:00 |
23:15:14.71 |
+03:24:49.2 |
HIP 114696 |
18.68 |
| 2026-03-31 12:00 |
23:16:11.29 |
+03:32:03.5 |
HIP 114971 |
20.97 |
| 2026-04-01 00:00 |
23:17:07.71 |
+03:39:16.9 |
HIP 114971 |
22.35 |
| 2026-04-01 12:00 |
23:18:03.98 |
+03:46:29.6 |
HIP 114971 |
32.54 |
| 2026-04-02 00:00 |
23:19:00.09 |
+03:53:41.5 |
HIP 115167 |
32.95 |
| 2026-04-02 12:00 |
23:19:56.04 |
+04:00:52.6 |
HIP 115254 |
30.91 |
| 2026-04-03 00:00 |
23:20:51.84 |
+04:08:02.9 |
HIP 115254 |
21.97 |
| 2026-04-03 12:00 |
23:21:47.48 |
+04:15:12.3 |
HIP 115254 |
22.34 |
| 2026-04-04 00:00 |
23:22:42.97 |
+04:22:21.0 |
HIP 115254 |
31.63 |
| 2026-04-04 12:00 |
23:23:38.30 |
+04:29:28.9 |
HIP 115524 |
27.19 |
| 2026-04-05 00:00 |
23:24:33.49 |
+04:36:35.9 |
HIP 115524 |
20.60 |
| 2026-04-05 12:00 |
23:25:28.51 |
+04:43:42.2 |
HIP 115611 |
12.37 |
| 2026-04-06 00:00 |
23:26:23.39 |
+04:50:47.6 |
HIP 115611 |
18.42 |
| 2026-04-06 12:00 |
23:27:18.11 |
+04:57:52.2 |
HIP 115819 |
9.91 |
| 2026-04-07 00:00 |
23:28:12.69 |
+05:04:56.0 |
HIP 115819 |
14.88 |
| 2026-04-07 12:00 |
23:29:07.11 |
+05:11:58.9 |
HIP 116004 |
19.97 |
| 2026-04-08 00:00 |
23:30:01.38 |
+05:19:01.1 |
HIP 116035 |
10.61 |
| 2026-04-08 12:00 |
23:30:55.50 |
+05:26:02.3 |
HIP 116035 |
11.66 |
| 2026-04-09 00:00 |
23:31:49.48 |
+05:33:02.8 |
HIP 116035 |
24.89 |
| 2026-04-09 12:00 |
23:32:43.30 |
+05:40:02.4 |
HIP 116273 |
22.12 |
| 2026-04-10 00:00 |
23:33:36.98 |
+05:47:01.2 |
HIP 116338 |
22.28 |
| 2026-04-10 12:00 |
23:34:30.50 |
+05:53:59.1 |
HIP 116338 |
25.79 |
| 2026-04-11 00:00 |
23:35:23.88 |
+06:00:56.2 |
HIP 116521 |
21.87 |
| 2026-04-11 12:00 |
23:36:17.11 |
+06:07:52.4 |
HIP 116521 |
15.06 |
| 2026-04-12 00:00 |
23:37:10.19 |
+06:14:47.8 |
HIP 116521 |
20.52 |
| 2026-04-12 12:00 |
23:38:03.13 |
+06:21:42.3 |
HIP 116715 |
19.28 |
| 2026-04-13 00:00 |
23:38:55.91 |
+06:28:35.9 |
HIP 116715 |
16.91 |
| 2026-04-13 12:00 |
23:39:48.55 |
+06:35:28.7 |
HIP 116715 |
25.26 |
| 2026-04-14 00:00 |
23:40:41.05 |
+06:42:20.6 |
HIP 116877 |
20.65 |
| 2026-04-14 12:00 |
23:41:33.40 |
+06:49:11.6 |
HIP 116877 |
24.09 |
| 2026-04-15 00:00 |
23:42:25.60 |
+06:56:01.8 |
HIP 116918 |
20.32 |
| 2026-04-15 12:00 |
23:43:17.65 |
+07:02:51.0 |
HIP 117063 |
15.53 |
| 2026-04-16 00:00 |
23:44:09.56 |
+07:09:39.4 |
HIP 117063 |
6.19 |