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 ]  
1370 Hella (1935 QG)
Classification: Main-belt Asteroid          SPK-ID: 2001370
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1703800482651272 3.7037e-08  
a 2.250275856964646 5.9092e-09 au
q 1.866873747845159 8.3313e-08 au
i 4.805417205736565 4.1187e-06 deg
node 306.0167844042577 4.1773e-05 deg
peri 3.826230159126328 4.304e-05 deg
M 62.67736855747813 1.152e-05 deg
tp 2458785.835454168569
(2019-Oct-29.33545417)
3.9181e-05 TDB
period 1232.968745783359
3.38
4.8567e-06
1.33e-08
d
yr
n .2919782040146333 1.1501e-09 deg/d
Q 2.633677966084133 6.9161e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3042  
   data-arc span      31123 days (85.21 yr)  
   first obs. used      1935-08-31  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37442  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 19:38:32  

Additional Information
 Earth MOID = .852354 au 
 Jupiter MOID = 2.61752 au 
 T_jup = 3.604 
[ 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 13.5   n/a MPO502166  
rotation period rot_per 1.80021 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.]

1370 Hella (1935 QG)          Discovered 1935-Aug-31 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-24 13:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin