메타데이터
| 항목 |
값 |
| Designation |
P/2019 V2 (Groeller) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2020-10-20T05:08:35.226240Z |
| Orbit solution date (soln_date, UTC) |
2022-06-07T21:45:21Z |
| Obs used |
115 |
| NEO |
- |
| M1 |
9.300 |
| K1 |
11.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-11-03T12:01:16.032000Z |
| Discovery magnitude (MPC) |
20.70 G |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-07-26.0000000 |
| e |
0.33232040 |
| q (au) |
5.020653 |
| a (au) |
7.519555 |
| i (deg) |
11.801180 |
| Ω (om, deg) |
189.184282 |
| ω (w, deg) |
336.046255 |
| M (ma, deg) |
355.879070 |
밝기
산란 + 전체 선형
$$
M_a = (6.254 + 5.538\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.254 |
| n |
5.538 |
| gf |
1.000 |
| gb |
-0.998 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
19:39:37.12 |
-09:37:30.6 |
HIP 96622 |
34.52 |
| 2026-09-20 12:00 |
19:39:35.41 |
-09:38:17.8 |
HIP 96622 |
33.64 |
| 2026-09-21 00:00 |
19:39:33.82 |
-09:39:04.9 |
HIP 96622 |
32.76 |
| 2026-09-21 12:00 |
19:39:32.34 |
-09:39:51.7 |
HIP 96622 |
31.90 |
| 2026-09-22 00:00 |
19:39:30.98 |
-09:40:38.4 |
HIP 96622 |
31.05 |
| 2026-09-22 12:00 |
19:39:29.73 |
-09:41:24.8 |
HIP 96622 |
30.22 |
| 2026-09-23 00:00 |
19:39:28.59 |
-09:42:11.0 |
HIP 96622 |
29.40 |
| 2026-09-23 12:00 |
19:39:27.56 |
-09:42:57.0 |
HIP 96622 |
28.60 |
| 2026-09-24 00:00 |
19:39:26.65 |
-09:43:42.8 |
HIP 96622 |
27.81 |
| 2026-09-24 12:00 |
19:39:25.85 |
-09:44:28.4 |
HIP 96622 |
27.03 |
| 2026-09-25 00:00 |
19:39:25.17 |
-09:45:13.7 |
HIP 96622 |
26.27 |
| 2026-09-25 12:00 |
19:39:24.60 |
-09:45:58.8 |
HIP 96622 |
25.52 |
| 2026-09-26 00:00 |
19:39:24.14 |
-09:46:43.6 |
HIP 96622 |
24.79 |
| 2026-09-26 12:00 |
19:39:23.80 |
-09:47:28.3 |
HIP 96622 |
24.08 |
| 2026-09-27 00:00 |
19:39:23.57 |
-09:48:12.6 |
HIP 96622 |
23.38 |
| 2026-09-27 12:00 |
19:39:23.45 |
-09:48:56.8 |
HIP 96622 |
22.71 |
| 2026-09-28 00:00 |
19:39:23.45 |
-09:49:40.7 |
HIP 96622 |
22.05 |
| 2026-09-28 12:00 |
19:39:23.57 |
-09:50:24.3 |
HIP 96622 |
21.41 |
| 2026-09-29 00:00 |
19:39:23.79 |
-09:51:07.7 |
HIP 96622 |
20.80 |
| 2026-09-29 12:00 |
19:39:24.13 |
-09:51:50.8 |
HIP 96622 |
20.22 |
| 2026-09-30 00:00 |
19:39:24.59 |
-09:52:33.7 |
HIP 96622 |
19.66 |
| 2026-09-30 12:00 |
19:39:25.15 |
-09:53:16.3 |
HIP 96622 |
19.13 |
| 2026-10-01 00:00 |
19:39:25.84 |
-09:53:58.6 |
HIP 96622 |
18.63 |
| 2026-10-01 12:00 |
19:39:26.63 |
-09:54:40.7 |
HIP 96622 |
18.17 |
| 2026-10-02 00:00 |
19:39:27.54 |
-09:55:22.5 |
HIP 96622 |
17.74 |
| 2026-10-02 12:00 |
19:39:28.57 |
-09:56:04.0 |
HIP 96622 |
17.36 |
| 2026-10-03 00:00 |
19:39:29.70 |
-09:56:45.2 |
HIP 96622 |
17.03 |
| 2026-10-03 12:00 |
19:39:30.96 |
-09:57:26.2 |
HIP 96622 |
16.74 |
| 2026-10-04 00:00 |
19:39:32.32 |
-09:58:06.8 |
HIP 96622 |
16.51 |
| 2026-10-04 12:00 |
19:39:33.80 |
-09:58:47.2 |
HIP 96622 |
16.33 |
| 2026-10-05 00:00 |
19:39:35.40 |
-09:59:27.3 |
HIP 96622 |
16.21 |
| 2026-10-05 12:00 |
19:39:37.11 |
-10:00:07.1 |
HIP 96622 |
16.16 |
| 2026-10-06 00:00 |
19:39:38.93 |
-10:00:46.6 |
HIP 96622 |
16.17 |
| 2026-10-06 12:00 |
19:39:40.87 |
-10:01:25.7 |
HIP 96622 |
16.24 |
| 2026-10-07 00:00 |
19:39:42.92 |
-10:02:04.6 |
HIP 96622 |
16.38 |
| 2026-10-07 12:00 |
19:39:45.08 |
-10:02:43.2 |
HIP 96622 |
16.59 |
| 2026-10-08 00:00 |
19:39:47.36 |
-10:03:21.5 |
HIP 96622 |
16.87 |
| 2026-10-08 12:00 |
19:39:49.75 |
-10:03:59.4 |
HIP 96622 |
17.21 |
| 2026-10-09 00:00 |
19:39:52.26 |
-10:04:37.0 |
HIP 96622 |
17.62 |
| 2026-10-09 12:00 |
19:39:54.87 |
-10:05:14.3 |
HIP 96622 |
18.08 |
| 2026-10-10 00:00 |
19:39:57.61 |
-10:05:51.3 |
HIP 96622 |
18.61 |
| 2026-10-10 12:00 |
19:40:00.45 |
-10:06:27.9 |
HIP 96622 |
19.20 |
| 2026-10-11 00:00 |
19:40:03.41 |
-10:07:04.2 |
HIP 96622 |
19.84 |