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187997 (2001 SC161)
Classification: Main-belt Asteroid          SPK-ID: 2187997
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1508601141534747 3.8588e-08  
a 2.547669243287432 1.3783e-08 au
q 2.163327570419794 9.8056e-08 au
i 13.2218498776379 4.8554e-06 deg
node 193.2858785699616 1.883e-05 deg
peri 206.9628900465234 2.705e-05 deg
M 240.6981598607275 2.2269e-05 deg
tp 2459692.718162280827
(2022-Apr-23.21816228)
9.4544e-05 TDB
period 1485.295936879405
4.07
1.2053e-05
3.3e-08
d
yr
n .242375940754512 1.9669e-09 deg/d
Q 2.932010916155071 1.5862e-08 au
  Orbit Determination Parameters
   # obs. used (total)      331  
   data-arc span      6848 days (18.75 yr)  
   first obs. used      2001-09-17  
   last obs. used      2020-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60333  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:40  

Additional Information
 Earth MOID = 1.17618 au 
 Jupiter MOID = 2.52322 au 
 T_jup = 3.389 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.53   n/a E2021B55  

187997 (2001 SC161)          Discovered 2001-Sep-17 by LINEAR at Socorro
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1981-Jan-29 15:07 < 00:01 Eunom 0.0428409581185868 0.042838317896298 0.0428435994790286 6.79391726831747 6.79391722008778 2444634.129829713 0.545537322338293 408.778277491182 57.5353700789551 -72.9889443467781 106575.880893181 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:40 2021-Apr-13 21:57
2131-Jul-15 09:41 < 00:01 Eunom 0.0384375345088331 0.0384314143631774 0.0384436894953408 6.68300897930108 6.68300892465408 2499586.903471935 0.708239607996947 1886.10312101153 60.6596254696333 80.8470610125978 93551.8016956335 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:40 2021-Apr-13 21:57
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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