Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    3.970763E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T05:03:22+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 47978
    NORAD ID 47978
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 58887
    NORAD ID 58887
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-1647 STARLINK-31321
    Time of Closest Approach 2026-10-20T05:51:18+0000
    Collision Probability (Pc) 3.970763E-7
    Conjunction Distance (km) 2.981 km
    Relative Speed (km/s) 1.323 km/s
    Conjunction Risk Parameters R (Radial): -2.412 | I (In-track): 1.745 | C (Cross-track): 0.142
    Collision Risk Index (CRI) 0.27
    X Position (km) -70.638 -68.912
    Position Y (km) 4112.273 4113.748
    Position Z (km) 5453.493 5455.424
    Velocity X (km/s) -7.601 -7.618
    Velocity Y (km/s) -0.66 0.398
    Velocity Z (km/s) 0.399 -0.395

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-1647 STARLINK-31321
    Semimajor Axis (a) 6838.366 km 6840.870 km
    Eccentricity (e) 0.000106 0.000137
    Inclination (i) 53.1593° 53.1569°
    RAAN 10.6876° 359.7394°
    Perigee Argument 69.1752° 56.2305°
    Mean Anomaly (M) 223.1526° 303.8828°
    Apogee 460.955 km 463.671 km
    Perigee 459.503 km 461.795 km
    Orbit Epoch 2026-10-19T12:00:02+0000 2026-10-19T04:26:12+0000

    STARLINK-1647 & STARLINK-31321 Collision Probability (Pc) Trend

    STARLINK-1647 & STARLINK-31321 Collision Probability (Pc) TrendNot Available

    STARLINK-1647 & STARLINK-31321 Miss Distance (Miss Distance) Trend

    STARLINK-1647 & STARLINK-31321 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-1647Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31321Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-1647Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31321Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-1647

    No nearby objects data