Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.541955E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T23:15:18+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 1577
    NORAD ID 1577
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 66039
    NORAD ID 66039
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter PORCUPINE 2 QIANFAN-97
    Time of Closest Approach 2026-10-22T06:11:31+0000
    Collision Probability (Pc) 1.541955E-6
    Conjunction Distance (km) 2.694 km
    Relative Speed (km/s) 14.66 km/s
    Conjunction Risk Parameters R (Radial): -2.626 | I (In-track): 0.012 | C (Cross-track): 0.596
    Collision Risk Index (CRI) 0.39
    X Position (km) 2501.753 2500.559
    Position Y (km) 1602.379 1602.321
    Position Z (km) 6823.136 6820.723
    Velocity X (km/s) 5.681 -5.818
    Velocity Y (km/s) 3.623 -3.352
    Velocity Z (km/s) -2.919 2.914

    Orbital Parameters 国际轨道数据源

    Parameter PORCUPINE 2 QIANFAN-97
    Semimajor Axis (a) 7501.324 km 7446.624 km
    Eccentricity (e) 0.007159 0.000172
    Inclination (i) 90.0424° 89.0099°
    RAAN 212.5382° 30.4801°
    Perigee Argument 107.1624° 109.4956°
    Mean Anomaly (M) 53.8450° 250.6381°
    Apogee 1176.889 km 1069.767 km
    Perigee 1069.485 km 1067.207 km
    Orbit Epoch 2026-10-21T07:04:04+0000 2026-10-21T04:58:46+0000

    PORCUPINE 2 & QIANFAN-97 Collision Probability (Pc) Trend

    PORCUPINE 2 & QIANFAN-97 Collision Probability (Pc) TrendNot Available

    PORCUPINE 2 & QIANFAN-97 Miss Distance (Miss Distance) Trend

    PORCUPINE 2 & QIANFAN-97 Miss Distance (Miss Distance) TrendNot Available

    PORCUPINE 2Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-97Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    PORCUPINE 2Collision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-97Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with PORCUPINE 2

    No nearby objects data