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 ]  
992 Swasey (A922 VD)
Classification: Main-belt Asteroid          SPK-ID: 2000992
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08519795122227874 2.0313e-08  
a 3.02986259675823 1.0731e-08 au
q 2.771724511029415 6.1267e-08 au
i 10.83960851436679 9.4332e-07 deg
node 212.2098693330156 2.7467e-06 deg
peri 346.4319629014725 1.4242e-05 deg
M 71.26979025184018 1.249e-05 deg
tp 2458819.139412885004
(2019-Dec-01.63941289)
6.6703e-05 TDB
period 1926.339489372272
5.27
1.0234e-05
2.802e-08
d
yr
n .1868829466385033 9.9288e-10 deg/d
Q 3.288000682487044 1.1646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3159  
   data-arc span      35759 days (97.90 yr)  
   first obs. used      1922-11-21  
   last obs. used      2020-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41791  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:46:33  

Additional Information
 Earth MOID = 1.76913 au 
 Jupiter MOID = 1.68277 au 
 T_jup = 3.211 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456824.5 (2014-Jun-16.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08484996966914857 2.0256e-08  
q 2.770552150537732 6.0913e-08 au
tp 2456886.405596451265
(2014-Aug-16.90559645)
6.7818e-05 TDB
node 212.2640201731749 2.7471e-06 deg
peri 344.9012991219906 1.4425e-05 deg
i 10.84388514787415 9.4386e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3159  
   data-arc span      35759 days (97.90 yr)  
   first obs. used      1922-11-21  
   last obs. used      2020-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41791  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:46:33  

Additional Information
 Jupiter MOID = 1.68277 au 
 T_jup = 3.211 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.102936781427507E-16 -1.217334889487901E-15 4.910108226732175E-13 -3.250670112700177E-14 9.356287733104379E-14 -7.656871188358343E-15
q -1.217334889487901E-15 3.710426935820498E-15 -1.542141056068329E-12 9.952953546613052E-14 -2.945046069669748E-13 2.384391660250248E-14
tp 4.910108226732175E-13 -1.542141056068329E-12 4.599242306945878E-9 -1.074239639572409E-10 9.726855353149471E-10 -2.671406429073355E-11
node -3.250670112700177E-14 9.952953546613052E-14 -1.074239639572409E-10 7.546565272075113E-12 -2.457410927430761E-11 -3.715607964274922E-13
peri 9.356287733104379E-14 -2.945046069669748E-13 9.726855353149471E-10 -2.457410927430761E-11 2.080683992416481E-10 -4.523717261794426E-12
i -7.656871188358343E-15 2.384391660250248E-14 -2.671406429073355E-11 -3.715607964274922E-13 -4.523717261794426E-12 8.908694434293076E-13

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 10.61   n/a E2021B10  
diameter diameter 27.585 km 0.376 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.305 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:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Marchini, A.; Conti, M.; Vallerani, C.; Papini, R.; Salvaggio, F. (2020) Minor Planet Bull. 47, 265-267.]
[Polakis, T. (2020) Minor Planet Bull. 47, 314-321.]
geometric albedo albedo 0.111   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

992 Swasey (A922 VD)          Discovered 1922-Nov-14 by Struve, O. at Williams Bay
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A922 VD = 1969 TA4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-24 09:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin