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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
85458 (1997 HD8)
Classification: Main-belt Asteroid          SPK-ID: 2085458
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09094136969515522 4.8139e-08  
a 3.189378268941463 2.3267e-08 au
q 2.899331840687964 1.5695e-07 au
i 5.779083249127194 5.5796e-06 deg
node 44.88223189404506 4.6802e-05 deg
peri 201.4376938785711 5.5441e-05 deg
M 348.8200629365249 2.9282e-05 deg
tp 2459065.109195159589
(2020-Aug-03.60919516)
0.00016908 TDB
period 2080.450911789162
5.70
2.2765e-05
6.233e-08
d
yr
n .1730394108123438 1.8935e-09 deg/d
Q 3.479424697194963 2.5383e-08 au
  Orbit Determination Parameters
   # obs. used (total)      702  
   data-arc span      10613 days (29.06 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59912  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:36:58  

Additional Information
 Earth MOID = 1.887 au 
 Jupiter MOID = 1.5358 au 
 T_jup = 3.183 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456735.5 (2014-Mar-19.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08943118666754994 4.8283e-08  
q 2.904460321350939 1.572e-07 au
tp 2456979.600123295855
(2014-Nov-18.10012330)
0.00017719 TDB
node 44.90859078119828 4.6786e-05 deg
peri 200.7895720057134 5.5649e-05 deg
i 5.779877914591005 5.5798e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      702  
   data-arc span      10613 days (29.06 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59912  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:36:58  

Additional Information
 Jupiter MOID = 1.5358 au 
 T_jup = 3.183 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.331275437490919E-15 -7.520614920150405E-15 -2.131775531984927E-12 -1.014265317104702E-14 -3.169495454214329E-13 1.815126338772894E-16
q -7.520614920150405E-15 2.471059205961544E-14 5.619515069360225E-12 2.629813841740013E-14 8.04958969674231E-13 -1.620628227740045E-16
tp -2.131775531984927E-12 5.619515069360225E-12 3.139594712155267E-8 1.956838133901006E-11 5.363904529584342E-9 1.596881655716369E-12
node -1.014265317104702E-14 2.629813841740013E-14 1.956838133901006E-11 2.188903236959585E-9 -2.174476918792531E-9 -4.880062061181623E-11
peri -3.169495454214329E-13 8.04958969674231E-13 5.363904529584342E-9 -2.174476918792531E-9 3.096798237891433E-9 4.884404570640799E-11
i 1.815126338772894E-16 -1.620628227740045E-16 1.596881655716369E-12 -4.880062061181623E-11 4.884404570640799E-11 3.113409801116633E-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 14.4   n/a MPO436373  
diameter diameter 6.732 km 0.288 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85458 (1997 HD8)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1997 HD8 = 2002 CB168 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-27 02:17 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin