메타데이터
| 항목 |
값 |
| Designation |
P/2018 V5 (Trujillo-Sheppard) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-10-03T20:45:02.079360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:48Z |
| Obs used |
21 |
| NEO |
- |
| M1 |
6.400 |
| K1 |
19.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2018-11-06T12:29:37.939200Z |
| Discovery magnitude (MPC) |
22.21 G |
| Discovery observatory (MPC) |
T09 · Subaru Telescope, Maunakea |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-08-01.0000000 |
| e |
0.47462980 |
| q (au) |
4.707643 |
| a (au) |
8.960620 |
| i (deg) |
10.580193 |
| Ω (om, deg) |
171.328440 |
| ω (w, deg) |
260.805603 |
| M (ma, deg) |
357.653302 |
밝기
산란 + 전체 선형
$$
M_a = (10.719 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.719 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.584 |
| k |
0.800 |
| 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) |
| 2026-05-12 00:00 |
14:22:55.40 |
-05:27:26.4 |
HIP 70395 |
18.26 |
| 2026-05-12 12:00 |
14:22:47.57 |
-05:26:47.4 |
HIP 70395 |
20.17 |
| 2026-05-13 00:00 |
14:22:39.76 |
-05:26:08.8 |
HIP 70395 |
22.09 |
| 2026-05-13 12:00 |
14:22:31.98 |
-05:25:30.5 |
HIP 70162 |
22.02 |
| 2026-05-14 00:00 |
14:22:24.23 |
-05:24:52.6 |
HIP 70162 |
20.08 |
| 2026-05-14 12:00 |
14:22:16.51 |
-05:24:15.0 |
HIP 70162 |
18.18 |
| 2026-05-15 00:00 |
14:22:08.82 |
-05:23:37.8 |
HIP 70162 |
16.31 |
| 2026-05-15 12:00 |
14:22:01.15 |
-05:23:00.9 |
HIP 70162 |
14.49 |
| 2026-05-16 00:00 |
14:21:53.52 |
-05:22:24.4 |
HIP 70162 |
12.73 |
| 2026-05-16 12:00 |
14:21:45.92 |
-05:21:48.2 |
HIP 70162 |
11.06 |
| 2026-05-17 00:00 |
14:21:38.35 |
-05:21:12.4 |
HIP 70162 |
9.53 |
| 2026-05-17 12:00 |
14:21:30.82 |
-05:20:37.0 |
HIP 70162 |
8.20 |
| 2026-05-18 00:00 |
14:21:23.32 |
-05:20:02.0 |
HIP 70162 |
7.17 |
| 2026-05-18 12:00 |
14:21:15.86 |
-05:19:27.3 |
HIP 70162 |
6.58 |
| 2026-05-19 00:00 |
14:21:08.43 |
-05:18:53.0 |
HIP 70162 |
6.55 |
| 2026-05-19 12:00 |
14:21:01.04 |
-05:18:19.1 |
HIP 70162 |
7.06 |
| 2026-05-20 00:00 |
14:20:53.69 |
-05:17:45.6 |
HIP 70162 |
8.02 |
| 2026-05-20 12:00 |
14:20:46.37 |
-05:17:12.5 |
HIP 70162 |
9.26 |
| 2026-05-21 00:00 |
14:20:39.10 |
-05:16:39.7 |
HIP 70162 |
10.70 |
| 2026-05-21 12:00 |
14:20:31.87 |
-05:16:07.4 |
HIP 70162 |
12.25 |
| 2026-05-22 00:00 |
14:20:24.68 |
-05:15:35.5 |
HIP 70162 |
13.88 |
| 2026-05-22 12:00 |
14:20:17.53 |
-05:15:03.9 |
HIP 70016 |
12.12 |
| 2026-05-23 00:00 |
14:20:10.42 |
-05:14:32.8 |
HIP 70016 |
10.34 |
| 2026-05-23 12:00 |
14:20:03.36 |
-05:14:02.1 |
HIP 70016 |
8.59 |
| 2026-05-24 00:00 |
14:19:56.34 |
-05:13:31.8 |
HIP 70016 |
6.90 |
| 2026-05-24 12:00 |
14:19:49.36 |
-05:13:01.9 |
HIP 70016 |
5.31 |
| 2026-05-25 00:00 |
14:19:42.44 |
-05:12:32.4 |
HIP 70016 |
3.92 |
| 2026-05-25 12:00 |
14:19:35.55 |
-05:12:03.3 |
HIP 70016 |
3.00 |
| 2026-05-26 00:00 |
14:19:28.72 |
-05:11:34.7 |
HIP 70016 |
3.00 |
| 2026-05-26 12:00 |
14:19:21.93 |
-05:11:06.4 |
HIP 70016 |
3.90 |
| 2026-05-27 00:00 |
14:19:15.19 |
-05:10:38.6 |
HIP 70016 |
5.24 |
| 2026-05-27 12:00 |
14:19:08.50 |
-05:10:11.2 |
HIP 70016 |
6.75 |
| 2026-05-28 00:00 |
14:19:01.86 |
-05:09:44.3 |
HIP 70016 |
8.34 |
| 2026-05-28 12:00 |
14:18:55.27 |
-05:09:17.8 |
HIP 70016 |
9.95 |
| 2026-05-29 00:00 |
14:18:48.73 |
-05:08:51.7 |
HIP 70016 |
11.58 |
| 2026-05-29 12:00 |
14:18:42.24 |
-05:08:26.0 |
HIP 70016 |
13.21 |
| 2026-05-30 00:00 |
14:18:35.81 |
-05:08:00.8 |
HIP 70016 |
14.83 |
| 2026-05-30 12:00 |
14:18:29.43 |
-05:07:36.0 |
HIP 70016 |
16.45 |
| 2026-05-31 00:00 |
14:18:23.10 |
-05:07:11.6 |
HIP 70016 |
18.06 |
| 2026-05-31 12:00 |
14:18:16.82 |
-05:06:47.7 |
HIP 70016 |
19.66 |
| 2026-06-01 00:00 |
14:18:10.60 |
-05:06:24.2 |
HIP 70016 |
21.24 |
| 2026-06-01 12:00 |
14:18:04.43 |
-05:06:01.2 |
HIP 70016 |
22.81 |
| 2026-06-02 00:00 |
14:17:58.32 |
-05:05:38.6 |
HIP 70016 |
24.37 |