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 ]  
57394 (2001 RD84)
Classification: Main-belt Asteroid          SPK-ID: 2057394
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05844851112288588 3.8392e-08  
a 2.324660919593429 8.4206e-09 au
q 2.188787949977634 9.1992e-08 au
i 3.649615427150937 4.081e-06 deg
node 321.7645562057255 7.0018e-05 deg
peri 140.8228602826324 8.9156e-05 deg
M 51.13101942694194 5.2152e-05 deg
tp 2459016.626221926959
(2020-Jun-16.12622193)
0.00018749 TDB
period 1294.60669566497
3.54
7.0342e-06
1.926e-08
d
yr
n .2780767326520641 1.5109e-09 deg/d
Q 2.460533889209224 8.9128e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1070  
   data-arc span      8124 days (22.24 yr)  
   first obs. used      1998-12-17  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51829  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:23:56  

Additional Information
 Earth MOID = 1.20689 au 
 Jupiter MOID = 2.60069 au 
 T_jup = 3.570 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456989.5 (2014-Nov-28.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05766327892535224 3.8273e-08  
q 2.190551384340938 9.1565e-08 au
tp 2456426.255865145618
(2013-May-13.75586515)
0.00019082 TDB
node 321.8652259828712 6.9989e-05 deg
peri 140.4501153023929 8.9748e-05 deg
i 3.650421151340923 4.0824e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1070  
   data-arc span      8124 days (22.24 yr)  
   first obs. used      1998-12-17  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51829  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:23:56  

Additional Information
 Jupiter MOID = 2.60069 au 
 T_jup = 3.570 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.464792352641456E-15 -3.492579007337154E-15 1.7541910125184E-12 -1.116675371653998E-14 5.641045951182339E-13 -8.119522112386978E-16
q -3.492579007337154E-15 8.384218761092939E-15 -4.098480684461606E-12 2.720242684573302E-14 -1.315224470892541E-12 2.110389340152701E-15
tp 1.7541910125184E-12 -4.098480684461606E-12 3.641334718987257E-8 -5.984671041267362E-11 1.073748432255508E-8 1.312843213999314E-11
node -1.116675371653998E-14 2.720242684573302E-14 -5.984671041267362E-11 4.89850163382731E-9 -4.905696366718976E-9 5.620814373029335E-11
peri 5.641045951182339E-13 -1.315224470892541E-12 1.073748432255508E-8 -4.905696366718976E-9 8.0547759813825E-9 -5.227862695416808E-11
i -8.119522112386978E-16 2.110389340152701E-15 1.312843213999314E-11 5.620814373029335E-11 -5.227862695416808E-11 1.666622290306816E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.61   n/a E2021B10  
diameter diameter 2.023 km 0.414 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.74 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:
[Polishook, D.; Ofek, E.O.; Waszczak, A.; Kulkarni, S.R.; et al. (2012). Mon. Not. Royal Ast. Soc. 421, 2094-2108.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.299   0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

57394 (2001 RD84)          Discovered 2001-Sep-11 by LONEOS at Anderson Mesa
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-20 12:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin