메타데이터
| 항목 |
값 |
| Designation |
C/1951 G1 (Groeneveld) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1951-11-08T09:50:31.205760Z |
| Orbit solution date (soln_date, UTC) |
2023-04-24T19:06:50Z |
| Obs used |
9 |
| NEO |
- |
| M1 |
5.900 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
1951-04-02T04:09:59.040000Z |
| Discovery magnitude (MPC) |
15.00 T |
| Discovery observatory (MPC) |
711 · McDonald Observatory, Fort Davis |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1951-04-02.0000000 |
| e |
1.01297450 |
| q (au) |
3.625080 |
| a (au) |
-279.400392 |
| i (deg) |
18.650997 |
| Ω (om, deg) |
31.526922 |
| ω (w, deg) |
188.119857 |
| M (ma, deg) |
-0.046515 |
밝기
산란 + 전체 선형
$$
M_a = (12.778 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.778 |
| n |
2.000 |
| gf |
0.841 |
| gb |
-0.923 |
| k |
0.965 |
| δ90 |
1.000 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
01:08:24.54 |
+01:58:07.9 |
HIP 5315 |
6.42 |
| 2026-03-26 12:00 |
01:08:25.63 |
+01:58:15.1 |
HIP 5315 |
6.66 |
| 2026-03-27 00:00 |
01:08:26.71 |
+01:58:22.3 |
HIP 5315 |
6.90 |
| 2026-03-27 12:00 |
01:08:27.80 |
+01:58:29.5 |
HIP 5315 |
7.15 |
| 2026-03-28 00:00 |
01:08:28.89 |
+01:58:36.8 |
HIP 5315 |
7.40 |
| 2026-03-28 12:00 |
01:08:29.99 |
+01:58:44.0 |
HIP 5315 |
7.65 |
| 2026-03-29 00:00 |
01:08:31.08 |
+01:58:51.2 |
HIP 5315 |
7.91 |
| 2026-03-29 12:00 |
01:08:32.18 |
+01:58:58.4 |
HIP 5315 |
8.17 |
| 2026-03-30 00:00 |
01:08:33.28 |
+01:59:05.6 |
HIP 5315 |
8.44 |
| 2026-03-30 12:00 |
01:08:34.38 |
+01:59:12.8 |
HIP 5315 |
8.70 |
| 2026-03-31 00:00 |
01:08:35.48 |
+01:59:20.0 |
HIP 5315 |
8.97 |
| 2026-03-31 12:00 |
01:08:36.58 |
+01:59:27.2 |
HIP 5315 |
9.25 |
| 2026-04-01 00:00 |
01:08:37.68 |
+01:59:34.3 |
HIP 5315 |
9.52 |
| 2026-04-01 12:00 |
01:08:38.79 |
+01:59:41.5 |
HIP 5315 |
9.80 |
| 2026-04-02 00:00 |
01:08:39.89 |
+01:59:48.7 |
HIP 5315 |
10.07 |
| 2026-04-02 12:00 |
01:08:41.00 |
+01:59:55.8 |
HIP 5315 |
10.35 |
| 2026-04-03 00:00 |
01:08:42.11 |
+02:00:03.0 |
HIP 5315 |
10.63 |
| 2026-04-03 12:00 |
01:08:43.22 |
+02:00:10.1 |
HIP 5315 |
10.92 |
| 2026-04-04 00:00 |
01:08:44.33 |
+02:00:17.3 |
HIP 5315 |
11.20 |
| 2026-04-04 12:00 |
01:08:45.44 |
+02:00:24.4 |
HIP 5315 |
11.48 |
| 2026-04-05 00:00 |
01:08:46.55 |
+02:00:31.5 |
HIP 5315 |
11.77 |
| 2026-04-05 12:00 |
01:08:47.66 |
+02:00:38.6 |
HIP 5315 |
12.05 |
| 2026-04-06 00:00 |
01:08:48.77 |
+02:00:45.7 |
HIP 5315 |
12.34 |
| 2026-04-06 12:00 |
01:08:49.88 |
+02:00:52.8 |
HIP 5315 |
12.63 |
| 2026-04-07 00:00 |
01:08:51.00 |
+02:00:59.8 |
HIP 5315 |
12.92 |
| 2026-04-07 12:00 |
01:08:52.11 |
+02:01:06.9 |
HIP 5315 |
13.21 |
| 2026-04-08 00:00 |
01:08:53.22 |
+02:01:13.9 |
HIP 5315 |
13.50 |
| 2026-04-08 12:00 |
01:08:54.34 |
+02:01:21.0 |
HIP 5315 |
13.79 |
| 2026-04-09 00:00 |
01:08:55.45 |
+02:01:28.0 |
HIP 5315 |
14.08 |
| 2026-04-09 12:00 |
01:08:56.57 |
+02:01:35.0 |
HIP 5315 |
14.37 |
| 2026-04-10 00:00 |
01:08:57.68 |
+02:01:42.0 |
HIP 5315 |
14.66 |
| 2026-04-10 12:00 |
01:08:58.79 |
+02:01:49.0 |
HIP 5315 |
14.95 |
| 2026-04-11 00:00 |
01:08:59.91 |
+02:01:55.9 |
HIP 5315 |
15.24 |
| 2026-04-11 12:00 |
01:09:01.02 |
+02:02:02.9 |
HIP 5315 |
15.54 |
| 2026-04-12 00:00 |
01:09:02.13 |
+02:02:09.8 |
HIP 5315 |
15.83 |
| 2026-04-12 12:00 |
01:09:03.24 |
+02:02:16.7 |
HIP 5315 |
16.12 |
| 2026-04-13 00:00 |
01:09:04.36 |
+02:02:23.6 |
HIP 5315 |
16.42 |
| 2026-04-13 12:00 |
01:09:05.47 |
+02:02:30.5 |
HIP 5315 |
16.71 |
| 2026-04-14 00:00 |
01:09:06.58 |
+02:02:37.3 |
HIP 5315 |
17.00 |
| 2026-04-14 12:00 |
01:09:07.69 |
+02:02:44.2 |
HIP 5315 |
17.29 |
| 2026-04-15 00:00 |
01:09:08.80 |
+02:02:51.0 |
HIP 5315 |
17.59 |
| 2026-04-15 12:00 |
01:09:09.90 |
+02:02:57.8 |
HIP 5315 |
17.88 |
| 2026-04-16 00:00 |
01:09:11.01 |
+02:03:04.6 |
HIP 5315 |
18.17 |