메타데이터
| 항목 |
값 |
| Designation |
C/2014 Q3 (Borisov) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-11-19T01:37:12.034560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:59Z |
| Obs used |
766 |
| NEO |
- |
| M1 |
8.800 |
| K1 |
22.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-10-19.0000000 |
| e |
0.94206319 |
| q (au) |
1.647407 |
| a (au) |
28.434555 |
| i (deg) |
89.948878 |
| Ω (om, deg) |
63.129517 |
| ω (w, deg) |
47.380883 |
| M (ma, deg) |
359.798051 |
밝기
산란 + 전체 선형
$$
M_a = (13.028 + 2.018\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.028 |
| n |
2.018 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2014-08-22 |
2014-11-18 |
+16.4094 |
-4.762 |
| 2014-11-19 |
2015-03-24 |
+26.2508 |
-7.298 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
15:40:17.14 |
-45:41:39.7 |
HIP 76756 |
5.27 |
| 2026-05-12 12:00 |
15:40:09.96 |
-45:41:33.5 |
HIP 76756 |
5.72 |
| 2026-05-13 00:00 |
15:40:02.78 |
-45:41:27.0 |
HIP 76756 |
6.40 |
| 2026-05-13 12:00 |
15:39:55.59 |
-45:41:20.1 |
HIP 76756 |
7.24 |
| 2026-05-14 00:00 |
15:39:48.39 |
-45:41:13.0 |
HIP 76756 |
8.20 |
| 2026-05-14 12:00 |
15:39:41.19 |
-45:41:05.5 |
HIP 76756 |
9.23 |
| 2026-05-15 00:00 |
15:39:33.99 |
-45:40:57.7 |
HIP 76606 |
9.28 |
| 2026-05-15 12:00 |
15:39:26.78 |
-45:40:49.6 |
HIP 76606 |
8.07 |
| 2026-05-16 00:00 |
15:39:19.58 |
-45:40:41.1 |
HIP 76606 |
6.88 |
| 2026-05-16 12:00 |
15:39:12.37 |
-45:40:32.3 |
HIP 76606 |
5.73 |
| 2026-05-17 00:00 |
15:39:05.16 |
-45:40:23.2 |
HIP 76606 |
4.64 |
| 2026-05-17 12:00 |
15:38:57.95 |
-45:40:13.8 |
HIP 76606 |
3.66 |
| 2026-05-18 00:00 |
15:38:50.74 |
-45:40:04.1 |
HIP 76606 |
2.93 |
| 2026-05-18 12:00 |
15:38:43.53 |
-45:39:54.1 |
HIP 76606 |
2.64 |
| 2026-05-19 00:00 |
15:38:36.32 |
-45:39:43.7 |
HIP 76606 |
2.94 |
| 2026-05-19 12:00 |
15:38:29.11 |
-45:39:33.0 |
HIP 76606 |
3.69 |
| 2026-05-20 00:00 |
15:38:21.91 |
-45:39:22.1 |
HIP 76606 |
4.67 |
| 2026-05-20 12:00 |
15:38:14.71 |
-45:39:10.8 |
HIP 76606 |
5.77 |
| 2026-05-21 00:00 |
15:38:07.52 |
-45:38:59.2 |
HIP 76524 |
5.54 |
| 2026-05-21 12:00 |
15:38:00.33 |
-45:38:47.3 |
HIP 76524 |
4.68 |
| 2026-05-22 00:00 |
15:37:53.15 |
-45:38:35.1 |
HIP 76524 |
4.06 |
| 2026-05-22 12:00 |
15:37:45.97 |
-45:38:22.6 |
HIP 76524 |
3.78 |
| 2026-05-23 00:00 |
15:37:38.80 |
-45:38:09.8 |
HIP 76524 |
3.92 |
| 2026-05-23 12:00 |
15:37:31.63 |
-45:37:56.7 |
HIP 76524 |
4.44 |
| 2026-05-24 00:00 |
15:37:24.48 |
-45:37:43.3 |
HIP 76524 |
5.23 |
| 2026-05-24 12:00 |
15:37:17.33 |
-45:37:29.6 |
HIP 76524 |
6.18 |
| 2026-05-25 00:00 |
15:37:10.19 |
-45:37:15.6 |
HIP 76524 |
7.24 |
| 2026-05-25 12:00 |
15:37:03.06 |
-45:37:01.3 |
HIP 76524 |
8.35 |
| 2026-05-26 00:00 |
15:36:55.94 |
-45:36:46.7 |
HIP 76524 |
9.51 |
| 2026-05-26 12:00 |
15:36:48.83 |
-45:36:31.9 |
HIP 76524 |
10.69 |
| 2026-05-27 00:00 |
15:36:41.73 |
-45:36:16.7 |
HIP 76524 |
11.89 |
| 2026-05-27 12:00 |
15:36:34.65 |
-45:36:01.3 |
HIP 76524 |
13.10 |
| 2026-05-28 00:00 |
15:36:27.57 |
-45:35:45.6 |
HIP 76524 |
14.32 |
| 2026-05-28 12:00 |
15:36:20.51 |
-45:35:29.6 |
HIP 76524 |
15.55 |
| 2026-05-29 00:00 |
15:36:13.46 |
-45:35:13.3 |
HIP 76281 |
14.74 |
| 2026-05-29 12:00 |
15:36:06.43 |
-45:34:56.8 |
HIP 76281 |
13.62 |
| 2026-05-30 00:00 |
15:35:59.41 |
-45:34:39.9 |
HIP 76281 |
12.54 |
| 2026-05-30 12:00 |
15:35:52.41 |
-45:34:22.9 |
HIP 76281 |
11.50 |
| 2026-05-31 00:00 |
15:35:45.42 |
-45:34:05.5 |
HIP 76281 |
10.50 |
| 2026-05-31 12:00 |
15:35:38.45 |
-45:33:47.9 |
HIP 76281 |
9.58 |
| 2026-06-01 00:00 |
15:35:31.49 |
-45:33:30.0 |
HIP 76281 |
8.74 |
| 2026-06-01 12:00 |
15:35:24.55 |
-45:33:11.8 |
HIP 76281 |
8.02 |
| 2026-06-02 00:00 |
15:35:17.63 |
-45:32:53.4 |
HIP 76281 |
7.44 |