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 ]  
1214 Richilde (1932 AA)
Classification: Main-belt Asteroid          SPK-ID: 2001214
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1172958753016023 4.0991e-08  
a 2.710410458747674 9.2897e-09 au
q 2.392490491562248 1.1059e-07 au
i 9.841812945835755 4.1659e-06 deg
node 285.84217296977 2.2502e-05 deg
peri 32.46421759699763 2.7387e-05 deg
M 68.06415148648418 1.5103e-05 deg
tp 2458692.346604424710
(2019-Jul-27.84660442)
6.8222e-05 TDB
period 1629.862710168851
4.46
8.3794e-06
2.294e-08
d
yr
n .2208774995304387 1.1356e-09 deg/d
Q 3.0283304259331 1.0379e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2755  
   data-arc span      32635 days (89.35 yr)  
   first obs. used      1930-09-20  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41621  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:48:31  

Additional Information
 Earth MOID = 1.38484 au 
 Jupiter MOID = 2.23678 au 
 T_jup = 3.332 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456385.5 (2013-Apr-03.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .119035314961586 4.0832e-08  
q 2.386901112074685 1.1039e-07 au
tp 2457065.267974988372
(2015-Feb-11.76797499)
6.7014e-05 TDB
node 285.9451573306867 2.2537e-05 deg
peri 33.10897322879235 2.7306e-05 deg
i 9.835099516675806 4.1642e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2755  
   data-arc span      32635 days (89.35 yr)  
   first obs. used      1930-09-20  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41621  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:48:31  

Additional Information
 Jupiter MOID = 2.23678 au 
 T_jup = 3.332 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.667267927866163E-15 -4.495123161477783E-15 4.312255626847202E-14 3.310099024339184E-15 -2.613419777765264E-14 -1.813640714670381E-15
q -4.495123161477783E-15 1.218661142295123E-14 -1.462146144888409E-13 -7.460728010598664E-15 5.321901065728104E-14 5.43882320259043E-15
tp 4.312255626847202E-14 -1.462146144888409E-13 4.490809907492755E-9 -3.351923192399568E-12 1.045231668274821E-9 -1.705236412324284E-12
node 3.310099024339184E-15 -7.460728010598664E-15 -3.351923192399568E-12 5.079061609978332E-10 -5.007556255076484E-10 1.786449654501624E-11
peri -2.613419777765264E-14 5.321901065728104E-14 1.045231668274821E-9 -5.007556255076484E-10 7.455906063377035E-10 -1.801734326883338E-11
i -1.813640714670381E-15 5.43882320259043E-15 -1.705236412324284E-12 1.786449654501624E-11 -1.801734326883338E-11 1.734053106718012E-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 11.2   n/a MPO502164  
diameter diameter 36.668 km 0.575 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.860 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Barucci, M.A.; Di Martino, M.; Dotto, E.; Fulchignoni, M.; et al. (1994) Icarus 109, 267-273.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.048   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B Xk   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1214 Richilde (1932 AA)          Discovered 1932-Jan-01 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1932 AA = 1930 QD = 1961 PC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-24 09:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin