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190818 (2001 SR2)
Classification: Main-belt Asteroid          SPK-ID: 2190818
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1928593781091846 5.7095e-08  
a 2.278503357249605 1.0099e-08 au
q 1.839072616750757 1.296e-07 au
i 5.442442839883776 6.3087e-06 deg
node 28.90650139888893 5.3312e-05 deg
peri 4.717316433296396 5.5658e-05 deg
M 197.7235969639624 1.9743e-05 deg
tp 2459766.772938950151
(2022-Jul-06.27293895)
7.1788e-05 TDB
period 1256.240921095487
3.44
8.3519e-06
2.287e-08
d
yr
n .2865692352117197 1.9052e-09 deg/d
Q 2.717934097748453 1.2047e-08 au
  Orbit Determination Parameters
   # obs. used (total)      472  
   data-arc span      6811 days (18.65 yr)  
   first obs. used      2001-08-25  
   last obs. used      2020-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59352  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:09:15  

Additional Information
 Earth MOID = .844232 au 
 Jupiter MOID = 2.71957 au 
 T_jup = 3.576 
[ 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 16.51   n/a E2021B55  

190818 (2001 SR2)          Discovered 2001-Sep-17 by Yeung, W. K. Y. at Desert Eagle
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

[ 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
1933-Feb-25 21:04 < 00:01 Iris 0.045048081724477 0.045033787840651 0.0450623765719425 4.30583680196525 4.30583677232792 2427129.377475467 0.886163654739724 784.718439761171 35.3073461246784 24.8019599417026 80405.0424340782 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 22:09:16 2021-Apr-13 22:09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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