메타데이터
| 항목 |
값 |
| Designation |
94P/Russell 4 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-10-27T19:11:10.328640Z |
| Orbit solution date (soln_date, UTC) |
2026-05-06T14:49:56Z |
| Obs used |
2200 |
| NEO |
- |
| M1 |
13.400 |
| K1 |
9.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-05-04.0000000 |
| e |
0.36414156 |
| q (au) |
2.232637 |
| a (au) |
3.511217 |
| i (deg) |
6.184203 |
| Ω (om, deg) |
70.900127 |
| ω (w, deg) |
92.686863 |
| M (ma, deg) |
224.009846 |
밝기
산란 + 전체 선형
$$
M_a = (12.248 + 4.046\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.248 |
| n |
4.046 |
| gf |
1.000 |
| gb |
-0.865 |
| k |
0.999 |
| 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 |
| 2020-09-12 |
2022-11-21 |
+13.3931 |
-4.938 |
| 2022-11-21 |
2023-05-28 |
-4.6753 |
+2.495 |
| 2023-05-28 |
2025-08-16 |
+3.5900 |
-2.457 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
23:03:03.48 |
-14:29:08.1 |
HIP 113798 |
14.70 |
| 2026-09-20 12:00 |
23:02:45.62 |
-14:30:38.5 |
HIP 113798 |
15.43 |
| 2026-09-21 00:00 |
23:02:27.83 |
-14:32:07.8 |
HIP 113798 |
17.37 |
| 2026-09-21 12:00 |
23:02:10.12 |
-14:33:35.9 |
HIP 113798 |
20.14 |
| 2026-09-22 00:00 |
23:01:52.49 |
-14:35:03.0 |
HIP 113675 |
19.90 |
| 2026-09-22 12:00 |
23:01:34.94 |
-14:36:29.0 |
HIP 113675 |
20.32 |
| 2026-09-23 00:00 |
23:01:17.48 |
-14:37:53.8 |
HIP 113675 |
21.66 |
| 2026-09-23 12:00 |
23:01:00.10 |
-14:39:17.5 |
HIP 113675 |
23.75 |
| 2026-09-24 00:00 |
23:00:42.81 |
-14:40:40.0 |
HIP 113631 |
25.20 |
| 2026-09-24 12:00 |
23:00:25.62 |
-14:42:01.4 |
HIP 113631 |
27.06 |
| 2026-09-25 00:00 |
23:00:08.52 |
-14:43:21.5 |
HIP 113631 |
29.44 |
| 2026-09-25 12:00 |
22:59:51.52 |
-14:44:40.5 |
HIP 113631 |
32.21 |
| 2026-09-26 00:00 |
22:59:34.62 |
-14:45:58.3 |
HIP 113378 |
32.99 |
| 2026-09-26 12:00 |
22:59:17.82 |
-14:47:14.9 |
HIP 113378 |
30.60 |
| 2026-09-27 00:00 |
22:59:01.13 |
-14:48:30.3 |
HIP 113378 |
28.65 |
| 2026-09-27 12:00 |
22:58:44.55 |
-14:49:44.4 |
HIP 113378 |
27.21 |
| 2026-09-28 00:00 |
22:58:28.08 |
-14:50:57.3 |
HIP 113378 |
26.37 |
| 2026-09-28 12:00 |
22:58:11.72 |
-14:52:09.0 |
HIP 113292 |
25.58 |
| 2026-09-29 00:00 |
22:57:55.48 |
-14:53:19.4 |
HIP 113292 |
21.48 |
| 2026-09-29 12:00 |
22:57:39.36 |
-14:54:28.6 |
HIP 113292 |
17.42 |
| 2026-09-30 00:00 |
22:57:23.36 |
-14:55:36.4 |
HIP 113292 |
13.40 |
| 2026-09-30 12:00 |
22:57:07.48 |
-14:56:43.1 |
HIP 113292 |
9.40 |
| 2026-10-01 00:00 |
22:56:51.73 |
-14:57:48.4 |
HIP 113292 |
5.45 |
| 2026-10-01 12:00 |
22:56:36.11 |
-14:58:52.4 |
HIP 113292 |
1.53 |
| 2026-10-02 00:00 |
22:56:20.62 |
-14:59:55.1 |
HIP 113292 |
2.36 |
| 2026-10-02 12:00 |
22:56:05.27 |
-15:00:56.5 |
HIP 113292 |
6.21 |
| 2026-10-03 00:00 |
22:55:50.05 |
-15:01:56.6 |
HIP 113292 |
10.02 |
| 2026-10-03 12:00 |
22:55:34.97 |
-15:02:55.4 |
HIP 113292 |
13.79 |
| 2026-10-04 00:00 |
22:55:20.02 |
-15:03:52.8 |
HIP 113117 |
13.67 |
| 2026-10-04 12:00 |
22:55:05.23 |
-15:04:48.9 |
HIP 113117 |
10.57 |
| 2026-10-05 00:00 |
22:54:50.57 |
-15:05:43.6 |
HIP 113117 |
8.02 |
| 2026-10-05 12:00 |
22:54:36.07 |
-15:06:37.0 |
HIP 113117 |
6.58 |
| 2026-10-06 00:00 |
22:54:21.72 |
-15:07:29.0 |
HIP 113117 |
6.93 |
| 2026-10-06 12:00 |
22:54:07.52 |
-15:08:19.6 |
HIP 113117 |
8.82 |
| 2026-10-07 00:00 |
22:53:53.47 |
-15:09:08.9 |
HIP 113117 |
11.46 |
| 2026-10-07 12:00 |
22:53:39.58 |
-15:09:56.8 |
HIP 113117 |
14.42 |
| 2026-10-08 00:00 |
22:53:25.85 |
-15:10:43.3 |
HIP 112959 |
14.24 |
| 2026-10-08 12:00 |
22:53:12.28 |
-15:11:28.4 |
HIP 112959 |
11.13 |
| 2026-10-09 00:00 |
22:52:58.88 |
-15:12:12.1 |
HIP 112959 |
8.26 |
| 2026-10-09 12:00 |
22:52:45.64 |
-15:12:54.4 |
HIP 112959 |
5.91 |
| 2026-10-10 00:00 |
22:52:32.57 |
-15:13:35.3 |
HIP 112959 |
4.83 |
| 2026-10-10 12:00 |
22:52:19.66 |
-15:14:14.8 |
HIP 112959 |
5.68 |
| 2026-10-11 00:00 |
22:52:06.93 |
-15:14:52.9 |
HIP 112959 |
7.81 |