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16000 Neilgehrels (1999 AW16)
Classification: Main-belt Asteroid          SPK-ID: 2016000
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1672057655733091 3.4554e-08  
a 2.403242355452618 7.1725e-09 au
q 2.001406377550961 8.2846e-08 au
i 2.187572533789236 4.8268e-06 deg
node 174.7995952710966 8.1182e-05 deg
peri 50.80926080516652 8.2278e-05 deg
M 232.42235872669 1.402e-05 deg
tp 2459682.744017623634
(2022-Apr-13.24401762)
5.3788e-05 TDB
period 1360.801505748078
3.73
6.092e-06
1.668e-08
d
yr
n .264549971821273 1.1843e-09 deg/d
Q 2.805078333354276 8.3718e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1607  
   data-arc span      10551 days (28.89 yr)  
   first obs. used      1992-03-25  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49996  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:15:53  

Additional Information
 Earth MOID = .991825 au 
 Jupiter MOID = 2.17447 au 
 T_jup = 3.504 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO449067  
diameter diameter 2.729 km 0.510 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.343   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16000 Neilgehrels           Discovered 1999 Jan. 10 by Spacewatch at Kitt Peak.
Neil Gehrels (1952) is an astrophysicist who has worked to develop gamma-ray astronomy into a full astronomical discipline. He is the Principal Investigator for the Swift Gamma-Ray Burst Mission (launched Nov. 2004) and was Project Scientist for the Compton Gamma Ray Observatory (1991-2000).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-03-05Last Updated: 2015-03-09

Alternate Designations
 1999 AW16 = 1992 GL1 = 1993 RK17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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