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11599 (1995 QR)
Classification: Main-belt Asteroid          SPK-ID: 2011599
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1776975996320206 3.4804e-08  
a 2.438355345672408 7.775e-09 au
q 2.005065453696515 8.4003e-08 au
i 2.721451136589393 3.298e-06 deg
node 38.02917181734269 7.7855e-05 deg
peri 278.1793741613369 7.8344e-05 deg
M 188.540662887773 8.8425e-06 deg
tp 2459662.872908192744
(2022-Mar-24.37290819)
3.5079e-05 TDB
period 1390.73351714471
3.81
6.6518e-06
1.821e-08
d
yr
n .2588562047020406 1.2381e-09 deg/d
Q 2.8716452376483 9.1566e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1778  
   data-arc span      9748 days (26.69 yr)  
   first obs. used      1994-03-10  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49001  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 20:16:41  

Additional Information
 Earth MOID = .993775 au 
 Jupiter MOID = 2.41918 au 
 T_jup = 3.480 
[ 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 14.3   n/a MPO319230  

11599 (1995 QR)          Discovered 1995-Aug-16 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 19990928/Numbers.arcLast Updated: 2004-04-19

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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
1965-Mar-11 10:45 < 00:01 Hebe 0.0237420453362725 0.0237386443009216 0.0237454483809151 7.17172028028812 7.17172024377776 2438830.947750334 0.618444693469988 387.376374560193 25.368639116651 -64.2870040191052 126176.759200311 T 29 CATAB v2.0f-lin.ifort 2020-Dec-17 20:16:47 2020-Dec-17 20:16
2005-Apr-21 18:19 < 00:01 Europ 0.018117267310978 0.0181164950920025 0.018118039550155 3.85544985419422 3.855449702033 2453482.263482925 0.747765043351466 62.7760755334955 30.5563897645403 64.7521876896199 82248.6656932091 T 29 CATAB v2.0f-lin.ifort 2020-Dec-17 20:16:47 2020-Dec-17 20:16

Alternate Designations
 1995 QR = 1998 HD21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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