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78168 (2002 NZ30)
Classification: Main-belt Asteroid          SPK-ID: 2078168
[ 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07832699928721559 4.9041e-08  
a 2.967698860893633 2.2398e-08 au
q 2.735247914331747 1.4805e-07 au
i 11.21035303562386 4.757e-06 deg
node 105.7082694780764 3.2202e-05 deg
peri 328.4489248259164 5.171e-05 deg
M 87.35159383115085 3.9296e-05 deg
tp 2458747.397451706091
(2019-Sep-20.89745171)		 0.00020329 TDB
period 1867.360516639336
5.11		 2.114e-05
5.788e-08		 d
yr
n .192785483462983 2.1825e-09 deg/d
Q 3.200149807455519 2.4153e-08 au
   Orbit Determination Parameters
   # obs. used (total)      781  
   data-arc span      8995 days (24.63 yr)  
   first obs. used      1996-06-08  
   last obs. used      2021-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51577  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 07:13:55  

Additional Information
 Earth MOID = 1.75713 au 
 Jupiter MOID = 2.00662 au 
 T_jup = 3.230 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456917.5 (2014-Sep-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07569658130362725 4.8647e-08  
q 2.743143787999902 1.4629e-07 au
tp 2456886.313823593740
(2014-Aug-16.81382359)		 0.00021053 TDB
node 105.8262104343803 3.2135e-05 deg
peri 329.7351831905336 5.2849e-05 deg
i 11.22073636254343 4.7617e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      781  
   data-arc span      8995 days (24.63 yr)  
   first obs. used      1996-06-08  
   last obs. used      2021-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51577  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 07:13:55  

Additional Information
 Jupiter MOID = 2.00662 au 
 T_jup = 3.230 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.366559168104307E-15 -7.045731229741605E-15 -2.584972938048065E-12 8.179752087377779E-15 -5.995374994453213E-13 3.004913826522531E-15
q -7.045731229741605E-15 2.139969238562816E-14 7.467196650293195E-12 -2.361082895939845E-14 1.737564260525696E-12 -8.152942614283681E-15
tp -2.584972938048065E-12 7.467196650293195E-12 4.432415977330048E-8 -7.897998122788954E-11 8.890181346578089E-9 -1.098123226888882E-11
node 8.179752087377779E-15 -2.361082895939845E-14 -7.897998122788954E-11 1.032635839706685E-9 -1.028019025651856E-9 7.129406997494999E-12
peri -5.995374994453213E-13 1.737564260525696E-12 8.890181346578089E-9 -1.028019025651856E-9 2.792986826916805E-9 -9.270051295178718E-12
i 3.004913826522531E-15 -8.152942614283681E-15 -1.098123226888882E-11 7.129406997494999E-12 -9.270051295178718E-12 2.26736531467422E-11

[ 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 14.74   n/a E2021B10  
diameter diameter 4.021 km 0.925 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.5142 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.158   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78168 (2002 NZ30)          Discovered 2002-Jul-08 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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