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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
910 Anneliese (A919 EC)
Classification: Main-belt Asteroid          SPK-ID: 2000910
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1551860783999793 1.2879e-08  
a 2.928006075950369 8.7756e-09 au
q 2.473620295492319 3.7491e-08 au
i 9.205147430495145 1.0316e-06 deg
node 49.85498920554027 5.6713e-06 deg
peri 208.432010668605 1.0029e-05 deg
M 58.98146497369815 6.2299e-06 deg
tp 2459096.673895784853
(2020-Sep-04.17389578)
3.1684e-05 TDB
period 1830.022322531083
5.01
8.2272e-06
2.252e-08
d
yr
n .196718911877582 8.8439e-10 deg/d
Q 3.382391856408418 1.0137e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3554  
   data-arc span      37416 days (102.44 yr)  
   first obs. used      1919-03-01  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41021  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:08:20  

Additional Information
 Earth MOID = 1.4635 au 
 Jupiter MOID = 1.68281 au 
 T_jup = 3.240 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456690.5 (2014-Feb-02.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1527816314560403 1.2996e-08  
q 2.481425232767849 3.7472e-08 au
tp 2457265.456979986822
(2015-Aug-30.95697999)
3.3585e-05 TDB
node 50.00088265033374 5.665e-06 deg
peri 207.7170540138913 1.0141e-05 deg
i 9.207916694588704 1.0327e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3554  
   data-arc span      37416 days (102.44 yr)  
   first obs. used      1919-03-01  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41021  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:08:20  

Additional Information
 Jupiter MOID = 1.68281 au 
 T_jup = 3.240 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.689051742888676E-16 -4.778920178378994E-16 -1.295416679857381E-13 1.128139818091745E-14 -3.839566425699014E-14 -1.310084820828551E-15
q -4.778920178378994E-16 1.404120997703767E-15 3.078512746316859E-13 -3.515090537236003E-14 9.585566928467106E-14 2.952115290819339E-15
tp -1.295416679857381E-13 3.078512746316859E-13 1.127939464034757E-9 -1.341970641574681E-11 2.929616453253204E-10 1.101920170180441E-11
node 1.128139818091745E-14 -3.515090537236003E-14 -1.341970641574681E-11 3.209248905333922E-11 -3.231426666920435E-11 3.613274140484683E-12
peri -3.839566425699014E-14 9.585566928467106E-14 2.929616453253204E-10 -3.231426666920435E-11 1.028311960496408E-10 -7.351136025413308E-13
i -1.310084820828551E-15 2.952115290819339E-15 1.101920170180441E-11 3.613274140484683E-12 -7.351136025413308E-13 1.066515651779417E-12

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 10.55   n/a MPO636074  
diameter diameter 48.590 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.2863 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Alvarez, E.M. (2015) Minor Planet Bull. 42, 252-253.]
[Oey, J.; Groom, R. (2018) Minor Planet Bull. 45, 363-366.]
geometric albedo albedo 0.057   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B Ch   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)

910 Anneliese (A919 EC)          Discovered 1919-Mar-01 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A919 EC = 1946 SJ = 1975 AH = A924 BD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-26 08:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin