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
$$
M_a = (13.162 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.162 |
| n |
2.000 |
| gf |
0.802 |
| gb |
-0.922 |
| k |
0.950 |
| 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) |
| 2026-07-29 00:00 |
01:11:05.23 |
+02:11:10.4 |
HIP 5510 |
17.46 |
| 2026-07-29 12:00 |
01:11:04.93 |
+02:11:07.3 |
HIP 5510 |
17.48 |
| 2026-07-30 00:00 |
01:11:04.63 |
+02:11:04.0 |
HIP 5510 |
17.49 |
| 2026-07-30 12:00 |
01:11:04.32 |
+02:11:00.7 |
HIP 5510 |
17.51 |
| 2026-07-31 00:00 |
01:11:04.00 |
+02:10:57.4 |
HIP 5510 |
17.52 |
| 2026-07-31 12:00 |
01:11:03.67 |
+02:10:54.0 |
HIP 5510 |
17.54 |
| 2026-08-01 00:00 |
01:11:03.34 |
+02:10:50.5 |
HIP 5510 |
17.55 |
| 2026-08-01 12:00 |
01:11:02.99 |
+02:10:47.1 |
HIP 5510 |
17.57 |
| 2026-08-02 00:00 |
01:11:02.64 |
+02:10:43.5 |
HIP 5510 |
17.59 |
| 2026-08-02 12:00 |
01:11:02.28 |
+02:10:39.9 |
HIP 5510 |
17.60 |
| 2026-08-03 00:00 |
01:11:01.90 |
+02:10:36.3 |
HIP 5510 |
17.62 |
| 2026-08-03 12:00 |
01:11:01.52 |
+02:10:32.6 |
HIP 5510 |
17.64 |
| 2026-08-04 00:00 |
01:11:01.14 |
+02:10:28.9 |
HIP 5510 |
17.66 |
| 2026-08-04 12:00 |
01:11:00.74 |
+02:10:25.1 |
HIP 5510 |
17.68 |
| 2026-08-05 00:00 |
01:11:00.33 |
+02:10:21.3 |
HIP 5510 |
17.70 |
| 2026-08-05 12:00 |
01:10:59.92 |
+02:10:17.4 |
HIP 5510 |
17.72 |
| 2026-08-06 00:00 |
01:10:59.49 |
+02:10:13.5 |
HIP 5510 |
17.74 |
| 2026-08-06 12:00 |
01:10:59.06 |
+02:10:09.5 |
HIP 5510 |
17.77 |
| 2026-08-07 00:00 |
01:10:58.62 |
+02:10:05.5 |
HIP 5510 |
17.79 |
| 2026-08-07 12:00 |
01:10:58.17 |
+02:10:01.4 |
HIP 5510 |
17.81 |
| 2026-08-08 00:00 |
01:10:57.72 |
+02:09:57.3 |
HIP 5510 |
17.84 |
| 2026-08-08 12:00 |
01:10:57.25 |
+02:09:53.2 |
HIP 5510 |
17.87 |
| 2026-08-09 00:00 |
01:10:56.78 |
+02:09:49.0 |
HIP 5510 |
17.89 |
| 2026-08-09 12:00 |
01:10:56.30 |
+02:09:44.7 |
HIP 5510 |
17.92 |
| 2026-08-10 00:00 |
01:10:55.81 |
+02:09:40.5 |
HIP 5510 |
17.95 |
| 2026-08-10 12:00 |
01:10:55.31 |
+02:09:36.1 |
HIP 5510 |
17.98 |
| 2026-08-11 00:00 |
01:10:54.80 |
+02:09:31.8 |
HIP 5510 |
18.01 |
| 2026-08-11 12:00 |
01:10:54.29 |
+02:09:27.3 |
HIP 5510 |
18.05 |
| 2026-08-12 00:00 |
01:10:53.76 |
+02:09:22.9 |
HIP 5510 |
18.08 |
| 2026-08-12 12:00 |
01:10:53.23 |
+02:09:18.4 |
HIP 5510 |
18.12 |
| 2026-08-13 00:00 |
01:10:52.69 |
+02:09:13.8 |
HIP 5510 |
18.15 |
| 2026-08-13 12:00 |
01:10:52.14 |
+02:09:09.2 |
HIP 5510 |
18.19 |
| 2026-08-14 00:00 |
01:10:51.59 |
+02:09:04.6 |
HIP 5510 |
18.23 |
| 2026-08-14 12:00 |
01:10:51.02 |
+02:09:00.0 |
HIP 5510 |
18.27 |
| 2026-08-15 00:00 |
01:10:50.45 |
+02:08:55.2 |
HIP 5510 |
18.32 |
| 2026-08-15 12:00 |
01:10:49.87 |
+02:08:50.5 |
HIP 5510 |
18.36 |
| 2026-08-16 00:00 |
01:10:49.29 |
+02:08:45.7 |
HIP 5510 |
18.41 |
| 2026-08-16 12:00 |
01:10:48.69 |
+02:08:40.8 |
HIP 5510 |
18.45 |
| 2026-08-17 00:00 |
01:10:48.09 |
+02:08:36.0 |
HIP 5510 |
18.50 |
| 2026-08-17 12:00 |
01:10:47.48 |
+02:08:31.1 |
HIP 5510 |
18.55 |
| 2026-08-18 00:00 |
01:10:46.86 |
+02:08:26.1 |
HIP 5510 |
18.61 |
| 2026-08-18 12:00 |
01:10:46.23 |
+02:08:21.1 |
HIP 5510 |
18.66 |
| 2026-08-19 00:00 |
01:10:45.60 |
+02:08:16.1 |
HIP 5510 |
18.72 |