Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.369731E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-15T04:33:45+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 39938
    NORAD ID 39938
    Object Type DEBRIS
    Country
    CIS CIS

    Conjunction Constraints

    Parameter PORCUPINE 2 COSMOS 1275 DEB
    Time of Closest Approach 2026-09-15T07:05:33+0000
    Collision Probability (Pc) 1.369731E-6
    Conjunction Distance (km) 2.908 km
    Relative Speed (km/s) 14.389 km/s
    Conjunction Risk Parameters R (Radial): 2.897 | I (In-track): 0.017 | C (Cross-track): 0.256
    Collision Risk Index (CRI) 0.38
    X Position (km) 2433.241 2434.035
    Position Y (km) 1538.433 1539.237
    Position Z (km) -6891.54 -6894.219
    Velocity X (km/s) -5.689 4.142
    Velocity Y (km/s) -3.612 5.307
    Velocity Z (km/s) -2.85 2.702

    Orbital Parameters 国际轨道数据源

    Parameter PORCUPINE 2 COSMOS 1275 DEB
    Semimajor Axis (a) 7501.349 km 7380.464 km
    Eccentricity (e) 0.006856 0.013279
    Inclination (i) 90.0367° 83.0684°
    RAAN 212.3880° 50.5981°
    Perigee Argument 210.7249° 86.0782°
    Mean Anomaly (M) 316.1526° 275.5541°
    Apogee 1174.644 km 1100.336 km
    Perigee 1071.780 km 904.318 km
    Orbit Epoch 2026-09-14T09:07:43+0000 2026-09-13T09:49:52+0000

    PORCUPINE 2 & COSMOS 1275 DEB Collision Probability (Pc) Trend

    PORCUPINE 2 & COSMOS 1275 DEB Collision Probability (Pc) TrendNot Available

    PORCUPINE 2 & COSMOS 1275 DEB Miss Distance (Miss Distance) Trend

    PORCUPINE 2 & COSMOS 1275 DEB Miss Distance (Miss Distance) TrendNot Available

    PORCUPINE 2Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    COSMOS 1275 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    PORCUPINE 2Collision Probability Trend

    Object 1 Probability TrendNot Available

    COSMOS 1275 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with PORCUPINE 2

    No nearby objects data