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 ]  
891 Gunhild (A918 KB)
Classification: Main-belt Asteroid          SPK-ID: 2000891
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 86 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02873565612879605 3.6132e-08  
a 2.862168104807714 1.054e-08 au
q 2.779921826365152 1.0301e-07 au
i 13.55872374809728 3.7531e-06 deg
node 105.8546501372767 1.6481e-05 deg
peri 292.3815836367946 6.7924e-05 deg
M 232.5691220577042 6.7352e-05 deg
tp 2459626.556181422548
(2022-Feb-16.05618142)
0.00033235 TDB
period 1768.646884895322
4.84
9.7695e-06
2.675e-08
d
yr
n .2035454352558944 1.1243e-09 deg/d
Q 2.944414383250277 1.0843e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2663  
   data-arc span      37286 days (102.08 yr)  
   first obs. used      1918-05-18  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39436  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:22:27  

Additional Information
 Earth MOID = 1.81999 au 
 Jupiter MOID = 2.24689 au 
 T_jup = 3.259 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455578.5 (2011-Jan-17.0) TDB
Reference: JPL 86 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02914608301216352 3.6779e-08  
q 2.775485272669566 1.0419e-07 au
tp 2456132.219452712760
(2012-Jul-23.71945271)
0.00031291 TDB
node 105.9634952512303 1.6532e-05 deg
peri 300.5628014974606 6.5732e-05 deg
i 13.54173334387271 3.7494e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2663  
   data-arc span      37286 days (102.08 yr)  
   first obs. used      1918-05-18  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39436  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:22:27  

Additional Information
 Jupiter MOID = 2.24689 au 
 T_jup = 3.259 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.35270186158003E-15 -3.813547603995744E-15 7.247680534393956E-13 -1.305411656300072E-15 1.279892491859419E-13 7.729443014125872E-17
q -3.813547603995744E-15 1.085531062548256E-14 -1.178090771627686E-12 3.737204508393031E-15 -1.9269368631829E-13 3.98797817256171E-16
tp 7.247680534393956E-13 -1.178090771627686E-12 9.791380553593579E-8 -3.917019313631481E-12 1.992452372591993E-8 -8.281653019002404E-12
node -1.305411656300072E-15 3.737204508393031E-15 -3.917019313631481E-12 2.732995392968991E-10 -2.662343331597076E-10 -9.008030457069326E-12
peri 1.279892491859419E-13 -1.9269368631829E-13 1.992452372591993E-8 -2.662343331597076E-10 4.320718935323264E-9 6.960586749465656E-12
i 7.729443014125872E-17 3.98797817256171E-16 -8.281653019002404E-12 -9.008030457069326E-12 6.960586749465656E-12 1.405793636560991E-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 10.0   n/a MPO347520  
diameter diameter 55.747 km 0.321 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.892 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Garceran, A.C.; Aznar, A.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 92-97.]
geometric albedo albedo 0.065   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

891 Gunhild (A918 KB)          Discovered 1918-May-17 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1929-Nov-22 05:57 < 00:01 Pallas 0.0241004527125917 0.024092393937515 0.0241085115122356 10.3575820875754 10.3575817046387 2425937.747810484 0.671318959471228 403.48770817809 25.8821352831992 -5.47337580632182 15972.7547337933 T 86 CATAB v2.0f-lin.ifort 2020-Jun-23 15:22:40 2020-Jun-23 15:22

Alternate Designations
 A918 KB = 1977 FH = 1999 CF154 = A915 VE 
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-29 15:25 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin