메타데이터
| 항목 |
값 |
| Designation |
91P/Russell 3 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2005-06-27T02:09:49.521600Z |
| Orbit solution date (soln_date, UTC) |
2021-09-07T13:51:26Z |
| Obs used |
337 |
| NEO |
- |
| M1 |
7.700 |
| K1 |
21.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2008-04-19.0000000 |
| e |
0.33022414 |
| q (au) |
2.605665 |
| a (au) |
3.890354 |
| i (deg) |
14.092166 |
| Ω (om, deg) |
247.895980 |
| ω (w, deg) |
354.865752 |
| M (ma, deg) |
131.902421 |
밝기
산란 + 전체 선형
$$
M_a = (17.424 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.424 |
| n |
2.000 |
| gf |
0.834 |
| gb |
-0.704 |
| k |
0.891 |
| δ90 |
2.146 |
| 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 |
06:07:10.04 |
+12:25:40.4 |
HIP 28894 |
17.16 |
| 2026-03-26 12:00 |
06:07:21.01 |
+12:26:12.4 |
HIP 28894 |
19.73 |
| 2026-03-27 00:00 |
06:07:32.16 |
+12:26:44.1 |
HIP 29146 |
20.44 |
| 2026-03-27 12:00 |
06:07:43.51 |
+12:27:15.7 |
HIP 29146 |
17.64 |
| 2026-03-28 00:00 |
06:07:55.04 |
+12:27:47.0 |
HIP 29146 |
14.81 |
| 2026-03-28 12:00 |
06:08:06.76 |
+12:28:18.0 |
HIP 29146 |
11.95 |
| 2026-03-29 00:00 |
06:08:18.66 |
+12:28:48.9 |
HIP 29146 |
9.08 |
| 2026-03-29 12:00 |
06:08:30.74 |
+12:29:19.5 |
HIP 29146 |
6.23 |
| 2026-03-30 00:00 |
06:08:43.01 |
+12:29:49.9 |
HIP 29146 |
3.59 |
| 2026-03-30 12:00 |
06:08:55.46 |
+12:30:20.0 |
HIP 29146 |
2.31 |
| 2026-03-31 00:00 |
06:09:08.09 |
+12:30:49.9 |
HIP 29146 |
4.12 |
| 2026-03-31 12:00 |
06:09:20.90 |
+12:31:19.5 |
HIP 29146 |
6.98 |
| 2026-04-01 00:00 |
06:09:33.88 |
+12:31:48.9 |
HIP 29146 |
10.06 |
| 2026-04-01 12:00 |
06:09:47.05 |
+12:32:18.0 |
HIP 29146 |
13.24 |
| 2026-04-02 00:00 |
06:10:00.39 |
+12:32:46.8 |
HIP 29146 |
16.49 |
| 2026-04-02 12:00 |
06:10:13.90 |
+12:33:15.4 |
HIP 29146 |
19.79 |
| 2026-04-03 00:00 |
06:10:27.59 |
+12:33:43.6 |
HIP 29146 |
23.14 |
| 2026-04-03 12:00 |
06:10:41.46 |
+12:34:11.6 |
HIP 29146 |
26.54 |
| 2026-04-04 00:00 |
06:10:55.49 |
+12:34:39.3 |
HIP 29146 |
29.98 |
| 2026-04-04 12:00 |
06:11:09.70 |
+12:35:06.7 |
HIP 29146 |
33.46 |
| 2026-04-05 00:00 |
06:11:24.08 |
+12:35:33.8 |
HIP 29321 |
36.38 |
| 2026-04-05 12:00 |
06:11:38.62 |
+12:36:00.6 |
HIP 29493 |
37.49 |
| 2026-04-06 00:00 |
06:11:53.34 |
+12:36:27.1 |
HIP 29493 |
35.46 |
| 2026-04-06 12:00 |
06:12:08.22 |
+12:36:53.3 |
HIP 29493 |
33.70 |
| 2026-04-07 00:00 |
06:12:23.27 |
+12:37:19.1 |
HIP 29493 |
32.24 |
| 2026-04-07 12:00 |
06:12:38.49 |
+12:37:44.7 |
HIP 29630 |
30.29 |
| 2026-04-08 00:00 |
06:12:53.87 |
+12:38:09.9 |
HIP 29630 |
26.88 |
| 2026-04-08 12:00 |
06:13:09.41 |
+12:38:34.7 |
HIP 29630 |
23.54 |
| 2026-04-09 00:00 |
06:13:25.12 |
+12:38:59.3 |
HIP 29630 |
20.34 |
| 2026-04-09 12:00 |
06:13:40.98 |
+12:39:23.4 |
HIP 29630 |
17.37 |
| 2026-04-10 00:00 |
06:13:57.01 |
+12:39:47.3 |
HIP 29630 |
14.80 |
| 2026-04-10 12:00 |
06:14:13.20 |
+12:40:10.8 |
HIP 29630 |
12.91 |
| 2026-04-11 00:00 |
06:14:29.55 |
+12:40:33.9 |
HIP 29630 |
12.07 |
| 2026-04-11 12:00 |
06:14:46.06 |
+12:40:56.6 |
HIP 29630 |
12.52 |
| 2026-04-12 00:00 |
06:15:02.72 |
+12:41:19.0 |
HIP 29736 |
13.20 |
| 2026-04-12 12:00 |
06:15:19.54 |
+12:41:41.0 |
HIP 29736 |
10.62 |
| 2026-04-13 00:00 |
06:15:36.51 |
+12:42:02.6 |
HIP 29736 |
9.21 |
| 2026-04-13 12:00 |
06:15:53.64 |
+12:42:23.9 |
HIP 29736 |
9.57 |
| 2026-04-14 00:00 |
06:16:10.92 |
+12:42:44.7 |
HIP 29736 |
11.57 |
| 2026-04-14 12:00 |
06:16:28.36 |
+12:43:05.2 |
HIP 29736 |
14.58 |
| 2026-04-15 00:00 |
06:16:45.94 |
+12:43:25.2 |
HIP 29736 |
18.13 |
| 2026-04-15 12:00 |
06:17:03.68 |
+12:43:44.9 |
HIP 29736 |
21.97 |
| 2026-04-16 00:00 |
06:17:21.57 |
+12:44:04.1 |
HIP 29920 |
19.59 |