Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
14827 Hypnos (1986 JK)
Classification: Apollo [NEO, PHA]          SPK-ID: 2014827
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6662279831544159 2.5993e-08  
a 2.841134741944624 2.1076e-08 au
q .9482912729489152 7.4009e-08 au
i 1.980573410094367 1.2438e-05 deg
node 57.96620492645818 0.00019745 deg
peri 238.1094436401666 0.00020207 deg
M 52.71798371876478 2.4045e-05 deg
tp 2458744.351118433561
(2019-Sep-17.85111843)
0.00011409 TDB
period 1749.186726409169
4.79
1.9464e-05
5.329e-08
d
yr
n .2058099313039201 2.2901e-09 deg/d
Q 4.733978210940332 3.5118e-08 au
  Orbit Determination Parameters
   # obs. used (total)      187  
   # delay obs. used      0  
   # Doppler obs. used      10  
   data-arc span      12022 days (32.91 yr)  
   first obs. used      1986-05-04  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63539  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Apr-04 07:36:57  

Additional Information
 Earth MOID = .0145783 au 
 Jupiter MOID = .530308 au 
 T_jup = 2.933 
[ 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 18.3   n/a PDS3 (MPO 12)  
diameter diameter 0.9 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed dark albedo (0.06)
B-V BV 0.684   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=4.74 deg.
U-B UB 0.492   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=4.74 deg.

14827 Hypnos           Discovered 1986 May 5 by C. S. Shoemaker and E. M. Shoemaker at Palomar.
Hypnos was the Greek god of sleep and twin brother of death. He entered the sleep of mortals and gave them, at the bidding of the Olympians, dreams of foolishness or inspiration, depending on the individual and their divine protectors or enemies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-25 02:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin