Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.814324E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T18:25:52+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 59632
    NORAD ID 59632
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 66748
    NORAD ID 66748
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-31781 UMBRA-11
    Time of Closest Approach 2026-09-05T13:42:47+0000
    Collision Probability (Pc) 1.814324E-6
    Conjunction Distance (km) 2.382 km
    Relative Speed (km/s) 13.439 km/s
    Conjunction Risk Parameters R (Radial): 0.51 | I (In-track): -1.099 | C (Cross-track): -2.05
    Collision Risk Index (CRI) 0.4
    X Position (km) -4056.035 -4056.368
    Position Y (km) 3742.224 3740.018
    Position Z (km) -4080.751 -4081.584
    Velocity X (km/s) -6.082 4.113
    Velocity Y (km/s) -3.819 -2.13
    Velocity Z (km/s) 2.544 -6.046

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-31781 UMBRA-11
    Semimajor Axis (a) 6861.199 km 6855.042 km
    Eccentricity (e) 0.000118 0.000301
    Inclination (i) 43.0007° 97.4132°
    RAAN 198.9911° 320.7242°
    Perigee Argument 265.1103° 75.9033°
    Mean Anomaly (M) 94.9613° 284.2541°
    Apogee 483.876 km 478.966 km
    Perigee 482.248 km 474.844 km
    Orbit Epoch 2026-09-03T22:44:46+0000 2026-09-03T10:31:45+0000

    STARLINK-31781 & UMBRA-11 Collision Probability (Pc) Trend

    STARLINK-31781 & UMBRA-11 Collision Probability (Pc) TrendNot Available

    STARLINK-31781 & UMBRA-11 Miss Distance (Miss Distance) Trend

    STARLINK-31781 & UMBRA-11 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-31781Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    UMBRA-11Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-31781Collision Probability Trend

    Object 1 Probability TrendNot Available

    UMBRA-11Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-31781

    No nearby objects data