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 ]  
23738 (1998 JZ1)
Classification: Mars-crossing Asteroid          SPK-ID: 2023738
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2910587200625697 3.0873e-08  
a 2.156232078570818 6.3857e-09 au
q 1.528641929624142 6.7091e-08 au
i 5.812892089271823 3.7392e-06 deg
node 41.16187277362279 3.6128e-05 deg
peri 246.7542751710498 3.6842e-05 deg
M 191.4779169736566 5.7761e-06 deg
tp 2459141.872260303180
(2020-Oct-19.37226030)
1.913e-05 TDB
period 1156.489465411361
3.17
5.1374e-06
1.407e-08
d
yr
n .3112868822129293 1.3828e-09 deg/d
Q 2.783822227517494 8.2443e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1450  
   data-arc span      15527 days (42.51 yr)  
   first obs. used      1976-08-30  
   last obs. used      2019-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53751  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 00:25:34  

Additional Information
 Earth MOID = .524445 au 
 Jupiter MOID = 2.42083 au 
 T_jup = 3.639 
[ 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 14.5   n/a MPO263556  
rotation period rot_per 6.2883 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Ditteon, R.; Young, J. (2018) Minor Planet Bull. 45, 117-119.]

23738 (1998 JZ1)          Discovered 1998-May-01 by JPL/GEODSS NEAT at Haleakala
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 JZ1 = 1976 QR2 = 1976 RA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-14 05:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin