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JPL Small-Body Database Browser
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3908 Nyx (1980 PA)
Classification: Amor [NEO]          SPK-ID: 2003908
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 178 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4594762469180053 4.0668e-09  
a 1.927084705579217 4.2472e-09 au
q 1.041635057566589 8.1632e-09 au
i 2.185926605156033 1.3228e-06 deg
node 261.2510573143405 4.7533e-05 deg
peri 126.6051178168928 4.7085e-05 deg
M 149.182281928598 4.4209e-06 deg
tp 2458195.584521194096
(2018-Mar-18.08452119)
1.0689e-05 TDB
period 977.1238949132994
2.68
3.2303e-06
8.844e-09
d
yr
n .3684282022720803 1.218e-09 deg/d
Q 2.812534353591845 6.1986e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 2.505783846087461E-14 5.369E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      1647  
   # delay obs. used      15  
   # Doppler obs. used      1  
   data-arc span      14141 days (38.72 yr)  
   first obs. used      1980-08-06  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44251  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Apr-27 07:25:12  

Additional Information
 Earth MOID = .0556973 au 
 Jupiter MOID = 2.64388 au 
 T_jup = 3.780 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ 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 17.3   n/a MPO253389  
diameter diameter 1.0 km 0.15 Benner et al. (2002) Icaurs 158:379-388  
rotation period rot_per 4.42601 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Drummond, J.D.; Wisniewski, W.Z. (1990) Icarus 83, 349-359.]
[Kaasalainen, M.; et al. (2004) Icarus 167, 178-196.]
[Cooney, Jr.; W.R.; Gross, J.; Terrell, D.; Reddy, V.; Dyvig, R. (2007) Minor Planet Bull. 34, 47-48.]
geometric albedo albedo 0.23   n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
Tholen spectral type spec_T V   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B V   n/a Binzel et al. (2004) Icarus 170, 259-294  

3908 Nyx           Discovered 1980 Aug. 6 by H.-E. Schuster at the European Southern Observatory.
Named for the goddess and personification of the night. She was a daughter of Chaos and had many children by her brother Erebus, who personifies the subterranean darkness. The realm of Nyx was in the far West, beyond the land of Atlas.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1980 PA = 1988 XB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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