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152688 (1998 QE61)
Classification: Main-belt Asteroid          SPK-ID: 2152688
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2548915805748688 2.7453e-07  
a 2.476232124282182 4.6822e-08 au
q 1.845061404253632 6.4886e-07 au
i 13.92359754916445 9.6907e-06 deg
node 323.3416696671633 3.7567e-05 deg
peri 27.51533095376421 5.6114e-05 deg
M 247.5366844291357 7.3724e-05 deg
tp 2459645.124960064769
(2022-Mar-06.62496006)
0.00030376 TDB
period 1423.263975553506
3.90
4.0368e-05
1.105e-07
d
yr
n .2529397259984721 7.1741e-09 deg/d
Q 3.107402844310733 5.8756e-08 au
  Orbit Determination Parameters
   # obs. used (total)      178  
   data-arc span      7887 days (21.59 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .64564  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:28:13  

Additional Information
 Earth MOID = .846322 au 
 Jupiter MOID = 2.35063 au 
 T_jup = 3.396 
[ 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 16.72   n/a E2021B55  
diameter diameter 1.264 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.231   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

152688 (1998 QE61)          Discovered 1998-Aug-23 by LONEOS at Anderson Mesa
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 1998 QE61 = 2002 TP70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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