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 ]  
52678 (1998 DC21)
Classification: Main-belt Asteroid          SPK-ID: 2052678
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05783885105916113 3.9659e-08  
a 2.985854558157761 1.9379e-08 au
q 2.813156161084157 1.1481e-07 au
i 9.540222927098695 4.912e-06 deg
node 340.1808176999486 2.6485e-05 deg
peri 146.5479431799566 5.1048e-05 deg
M 181.2094023316739 4.3255e-05 deg
tp 2460136.430448182328
(2023-Jul-10.93044818)
0.00022721 TDB
period 1884.522820213874
5.16
1.8346e-05
5.023e-08
d
yr
n .1910297907451944 1.8597e-09 deg/d
Q 3.158552955231365 2.0499e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1128  
   data-arc span      8193 days (22.43 yr)  
   first obs. used      1998-02-22  
   last obs. used      2020-07-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57631  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:47:01  

Additional Information
 Earth MOID = 1.83253 au 
 Jupiter MOID = 1.8644 au 
 T_jup = 3.234 
[ 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 13.92   n/a E2021B10  
diameter diameter 6.341 km 0.297 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.45123 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 0.101   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52678 (1998 DC21)          Discovered 1998-Feb-22 by Spacewatch at Kitt Peak
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 DC21 = 2000 NV16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-23 22:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin