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) |
| 2026-05-12 00:00 |
01:10:05.26 |
+02:08:18.3 |
HIP 5510 |
19.75 |
| 2026-05-12 12:00 |
01:10:06.20 |
+02:08:23.4 |
HIP 5510 |
19.58 |
| 2026-05-13 00:00 |
01:10:07.14 |
+02:08:28.5 |
HIP 5510 |
19.42 |
| 2026-05-13 12:00 |
01:10:08.08 |
+02:08:33.5 |
HIP 5510 |
19.27 |
| 2026-05-14 00:00 |
01:10:09.01 |
+02:08:38.5 |
HIP 5510 |
19.11 |
| 2026-05-14 12:00 |
01:10:09.94 |
+02:08:43.5 |
HIP 5510 |
18.96 |
| 2026-05-15 00:00 |
01:10:10.86 |
+02:08:48.4 |
HIP 5510 |
18.81 |
| 2026-05-15 12:00 |
01:10:11.78 |
+02:08:53.2 |
HIP 5510 |
18.67 |
| 2026-05-16 00:00 |
01:10:12.69 |
+02:08:58.0 |
HIP 5510 |
18.52 |
| 2026-05-16 12:00 |
01:10:13.60 |
+02:09:02.8 |
HIP 5510 |
18.39 |
| 2026-05-17 00:00 |
01:10:14.50 |
+02:09:07.5 |
HIP 5510 |
18.25 |
| 2026-05-17 12:00 |
01:10:15.39 |
+02:09:12.2 |
HIP 5510 |
18.12 |
| 2026-05-18 00:00 |
01:10:16.28 |
+02:09:16.8 |
HIP 5510 |
17.99 |
| 2026-05-18 12:00 |
01:10:17.17 |
+02:09:21.4 |
HIP 5510 |
17.86 |
| 2026-05-19 00:00 |
01:10:18.04 |
+02:09:26.0 |
HIP 5510 |
17.74 |
| 2026-05-19 12:00 |
01:10:18.92 |
+02:09:30.4 |
HIP 5510 |
17.62 |
| 2026-05-20 00:00 |
01:10:19.78 |
+02:09:34.9 |
HIP 5510 |
17.50 |
| 2026-05-20 12:00 |
01:10:20.64 |
+02:09:39.3 |
HIP 5510 |
17.39 |
| 2026-05-21 00:00 |
01:10:21.50 |
+02:09:43.7 |
HIP 5510 |
17.28 |
| 2026-05-21 12:00 |
01:10:22.35 |
+02:09:48.0 |
HIP 5510 |
17.17 |
| 2026-05-22 00:00 |
01:10:23.19 |
+02:09:52.2 |
HIP 5510 |
17.07 |
| 2026-05-22 12:00 |
01:10:24.03 |
+02:09:56.4 |
HIP 5510 |
16.97 |
| 2026-05-23 00:00 |
01:10:24.86 |
+02:10:00.6 |
HIP 5510 |
16.87 |
| 2026-05-23 12:00 |
01:10:25.68 |
+02:10:04.7 |
HIP 5510 |
16.78 |
| 2026-05-24 00:00 |
01:10:26.50 |
+02:10:08.8 |
HIP 5510 |
16.69 |
| 2026-05-24 12:00 |
01:10:27.32 |
+02:10:12.8 |
HIP 5510 |
16.60 |
| 2026-05-25 00:00 |
01:10:28.12 |
+02:10:16.8 |
HIP 5510 |
16.52 |
| 2026-05-25 12:00 |
01:10:28.92 |
+02:10:20.7 |
HIP 5510 |
16.44 |
| 2026-05-26 00:00 |
01:10:29.71 |
+02:10:24.6 |
HIP 5510 |
16.36 |
| 2026-05-26 12:00 |
01:10:30.50 |
+02:10:28.4 |
HIP 5510 |
16.29 |
| 2026-05-27 00:00 |
01:10:31.28 |
+02:10:32.2 |
HIP 5510 |
16.22 |
| 2026-05-27 12:00 |
01:10:32.06 |
+02:10:35.9 |
HIP 5510 |
16.15 |
| 2026-05-28 00:00 |
01:10:32.82 |
+02:10:39.6 |
HIP 5510 |
16.08 |
| 2026-05-28 12:00 |
01:10:33.58 |
+02:10:43.3 |
HIP 5510 |
16.02 |
| 2026-05-29 00:00 |
01:10:34.34 |
+02:10:46.8 |
HIP 5510 |
15.96 |
| 2026-05-29 12:00 |
01:10:35.08 |
+02:10:50.4 |
HIP 5510 |
15.91 |
| 2026-05-30 00:00 |
01:10:35.82 |
+02:10:53.8 |
HIP 5510 |
15.86 |
| 2026-05-30 12:00 |
01:10:36.56 |
+02:10:57.3 |
HIP 5510 |
15.81 |
| 2026-05-31 00:00 |
01:10:37.28 |
+02:11:00.6 |
HIP 5510 |
15.76 |
| 2026-05-31 12:00 |
01:10:38.00 |
+02:11:04.0 |
HIP 5510 |
15.72 |
| 2026-06-01 00:00 |
01:10:38.72 |
+02:11:07.2 |
HIP 5510 |
15.67 |
| 2026-06-01 12:00 |
01:10:39.42 |
+02:11:10.5 |
HIP 5510 |
15.64 |
| 2026-06-02 00:00 |
01:10:40.12 |
+02:11:13.6 |
HIP 5510 |
15.60 |