메타데이터
| 항목 |
값 |
| Designation |
298P/Christensen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-03-05T06:56:45.335040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:17Z |
| Obs used |
145 |
| NEO |
- |
| M1 |
16.100 |
| K1 |
8.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2007-08-29.0000000 |
| e |
0.41245123 |
| q (au) |
2.050749 |
| a (au) |
3.490347 |
| i (deg) |
8.021637 |
| Ω (om, deg) |
57.117855 |
| ω (w, deg) |
95.623968 |
| M (ma, deg) |
26.709372 |
밝기
산란 + 전체 선형
$$
M_a = (13.973 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.973 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
03:36:08.79 |
+19:15:46.4 |
HIP 16707 |
16.86 |
| 2026-06-01 12:00 |
03:36:50.99 |
+19:18:40.5 |
HIP 16808 |
16.43 |
| 2026-06-02 00:00 |
03:37:33.22 |
+19:21:34.1 |
HIP 16961 |
8.89 |
| 2026-06-02 12:00 |
03:38:15.50 |
+19:24:27.2 |
HIP 16961 |
3.02 |
| 2026-06-03 00:00 |
03:38:57.81 |
+19:27:19.8 |
HIP 16961 |
12.44 |
| 2026-06-03 12:00 |
03:39:40.17 |
+19:30:11.8 |
HIP 16961 |
22.72 |
| 2026-06-04 00:00 |
03:40:22.56 |
+19:33:03.3 |
HIP 17234 |
17.92 |
| 2026-06-04 12:00 |
03:41:04.98 |
+19:35:54.3 |
HIP 17234 |
13.56 |
| 2026-06-05 00:00 |
03:41:47.45 |
+19:38:44.7 |
HIP 17309 |
8.10 |
| 2026-06-05 12:00 |
03:42:29.94 |
+19:41:34.7 |
HIP 17309 |
2.63 |
| 2026-06-06 00:00 |
03:43:12.48 |
+19:44:24.1 |
HIP 17408 |
9.31 |
| 2026-06-06 12:00 |
03:43:55.05 |
+19:47:12.9 |
HIP 17408 |
7.54 |
| 2026-06-07 00:00 |
03:44:37.66 |
+19:50:01.3 |
HIP 17503 |
3.61 |
| 2026-06-07 12:00 |
03:45:20.30 |
+19:52:49.0 |
HIP 17503 |
7.08 |
| 2026-06-08 00:00 |
03:46:02.97 |
+19:55:36.3 |
HIP 17503 |
17.43 |
| 2026-06-08 12:00 |
03:46:45.68 |
+19:58:23.0 |
HIP 17503 |
27.83 |
| 2026-06-09 00:00 |
03:47:28.43 |
+20:01:09.1 |
HIP 17503 |
38.24 |
| 2026-06-09 12:00 |
03:48:11.20 |
+20:03:54.7 |
HIP 17920 |
38.60 |
| 2026-06-10 00:00 |
03:48:54.01 |
+20:06:39.7 |
HIP 17920 |
35.68 |
| 2026-06-10 12:00 |
03:49:36.85 |
+20:09:24.2 |
HIP 18025 |
31.97 |
| 2026-06-11 00:00 |
03:50:19.73 |
+20:12:08.1 |
HIP 18025 |
23.90 |
| 2026-06-11 12:00 |
03:51:02.63 |
+20:14:51.5 |
HIP 18025 |
18.36 |
| 2026-06-12 00:00 |
03:51:45.56 |
+20:17:34.3 |
HIP 18025 |
17.91 |
| 2026-06-12 12:00 |
03:52:28.53 |
+20:20:16.5 |
HIP 18165 |
11.00 |
| 2026-06-13 00:00 |
03:53:11.52 |
+20:22:58.2 |
HIP 18165 |
10.74 |
| 2026-06-13 12:00 |
03:53:54.55 |
+20:25:39.2 |
HIP 18165 |
18.09 |
| 2026-06-14 00:00 |
03:54:37.60 |
+20:28:19.7 |
HIP 18405 |
27.50 |
| 2026-06-14 12:00 |
03:55:20.68 |
+20:30:59.7 |
HIP 18405 |
18.69 |
| 2026-06-15 00:00 |
03:56:03.78 |
+20:33:39.0 |
HIP 18405 |
12.67 |
| 2026-06-15 12:00 |
03:56:46.91 |
+20:36:17.7 |
HIP 18405 |
13.76 |
| 2026-06-16 00:00 |
03:57:30.07 |
+20:38:55.9 |
HIP 18544 |
7.58 |
| 2026-06-16 12:00 |
03:58:13.25 |
+20:41:33.5 |
HIP 18544 |
2.87 |
| 2026-06-17 00:00 |
03:58:56.46 |
+20:44:10.5 |
HIP 18544 |
13.29 |
| 2026-06-17 12:00 |
03:59:39.69 |
+20:46:46.8 |
HIP 18544 |
23.73 |
| 2026-06-18 00:00 |
04:00:22.94 |
+20:49:22.6 |
HIP 18792 |
21.21 |
| 2026-06-18 12:00 |
04:01:06.22 |
+20:51:57.8 |
HIP 18792 |
16.95 |
| 2026-06-19 00:00 |
04:01:49.52 |
+20:54:32.4 |
HIP 18792 |
18.51 |
| 2026-06-19 12:00 |
04:02:32.84 |
+20:57:06.4 |
HIP 18976 |
21.13 |
| 2026-06-20 00:00 |
04:03:16.18 |
+20:59:39.8 |
HIP 18976 |
10.79 |
| 2026-06-20 12:00 |
04:03:59.54 |
+21:02:12.6 |
HIP 18976 |
2.08 |
| 2026-06-21 00:00 |
04:04:42.92 |
+21:04:44.8 |
HIP 18976 |
10.48 |
| 2026-06-21 12:00 |
04:05:26.32 |
+21:07:16.3 |
HIP 19054 |
17.33 |
| 2026-06-22 00:00 |
04:06:09.74 |
+21:09:47.3 |
HIP 19216 |
14.94 |