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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
85234 (1993 HY2)
Classification: Main-belt Asteroid          SPK-ID: 2085234
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1058564028478013 3.1441e-08  
a 2.282539455158227 8.8809e-09 au
q 2.040918039076997 7.2289e-08 au
i 4.750047472611869 3.9594e-06 deg
node 84.83838697801805 4.3145e-05 deg
peri 250.7086461062361 4.711e-05 deg
M 298.1042212170188 1.9968e-05 deg
tp 2459613.063069203220
(2022-Feb-02.56306920)
7.026e-05 TDB
period 1259.580321083152
3.45
7.3512e-06
2.013e-08
d
yr
n .2858094827096259 1.668e-09 deg/d
Q 2.524160871239457 9.821e-09 au
  Orbit Determination Parameters
   # obs. used (total)      644  
   data-arc span      10334 days (28.29 yr)  
   first obs. used      1993-04-19  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59328  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 23:31:57  

Additional Information
 Earth MOID = 1.03599 au 
 Jupiter MOID = 2.77237 au 
 T_jup = 3.592 
[ 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 16.58   n/a MPCxxxxx  
diameter diameter 2.562 km 0.908 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.61767 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 0.074   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85234 (1993 HY2)          Discovered 1993-Apr-19 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1993 HY2 = 1997 ML12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-26 10:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin