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 ]  
48842 (1998 BA44)
Classification: Main-belt Asteroid          SPK-ID: 2048842
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07863903030547945 5.0961e-08  
a 3.144916771233889 2.0629e-08 au
q 2.897603565952616 1.5626e-07 au
i 15.70791029848691 5.0798e-06 deg
node 332.8261843598056 1.5115e-05 deg
peri 21.53494952618857 3.0589e-05 deg
M 125.0661269587807 2.711e-05 deg
tp 2458292.799729269127
(2018-Jun-23.29972927)
0.00015222 TDB
period 2037.099122347348
5.58
2.0043e-05
5.487e-08
d
yr
n .1767218865546278 1.7388e-09 deg/d
Q 3.392229976515161 2.2251e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1721  
   data-arc span      15742 days (43.10 yr)  
   first obs. used      1977-03-20  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47186  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:48:58  

Additional Information
 Earth MOID = 1.89573 au 
 Jupiter MOID = 2.01789 au 
 T_jup = 3.147 
[ 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 12.9   n/a MPO337648  
diameter diameter 17.019 km 0.361 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.184 h n/a LCDB (Rev. 2019-August); 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.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.051   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48842 (1998 BA44)          Discovered 1998-Jan-25 by Tombelli, M., Forti, G. at Cima Ekar
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 BA44 = 2001 ON21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-11 08:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin