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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 ]

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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 
[ 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 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

[ 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
1927-May-27 01:56 00:01 Jupiter 1.83645334783377 1.83645266878753 1.83645402688094 2.89703717756583 2.73319770746262 2425027.580408120 1.48627434109921 80.9289218435271 9.19170230805249 -61.8525067132184 8118027.6639745 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 11:47:31 2021-Apr-12 11:47
1965-Jun-02 12:06 < 00:01 Jupiter 1.94233878679446 1.942338235249 1.94233933834002 3.80893058319374 3.69266632049777 2438914.004175848 0.802896912023763 39.3016210089451 11.3328695503352 50.3270718416646 6621342.8411038 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 11:47:31 2021-Apr-12 11:47
1974-Sep-01 11:57 < 00:01 Jupiter 1.88059175271332 1.88059138920328 1.88059211622347 2.85835529535857 2.69618077207814 2442291.997652897 0.710590380903581 34.9956132452076 8.95284119628937 -60.2823901202403 8266335.11454073 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 11:47:31 2021-Apr-12 11:47
2012-Sep-09 06:08 < 00:01 Jupiter 1.87901124349618 1.87901103915016 1.87901144784221 3.74356693019209 3.62115056586614 2456179.755892643 0.132104933002623 15.7943673382637 8.51538065981006 -89.2137934771263 7597003.84841597 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 11:47:31 2021-Apr-12 11:47
2021-Dec-03 22:53 < 00:01 Jupiter 1.93144798318054 1.93144776620845 1.93144820015253 2.85011862868119 2.69185636622989 2459552.453447032 0.176506616938821 8.94601747384632 6.56097727787315 41.49043211606 8101878.21912364 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 11:47:31 2021-Apr-12 11:47
2059-Dec-18 20:40 < 00:01 Jupiter 1.82187748724758 1.82187707260753 1.82187790188794 3.69384620788837 3.56576289791577 2473446.361131141 0.734637932946511 52.858325707668 9.82563812227979 71.0190468835416 6802028.2416112 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 11:47:31 2021-Apr-12 11:47
2069-Mar-09 11:48 < 00:01 Jupiter 1.98601796892306 1.98601740436295 1.98601853348328 2.89955660265537 2.74853465400309 2476814.991497596 0.96681033971443 35.4943619273616 7.63288374243236 -45.9147265276841 7040623.97791721 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 11:47:31 2021-Apr-12 11:47
2107-Apr-04 15:57 00:01 Jupiter 1.7797058868433 1.77970520828414 1.77970656540469 3.66273234256661 3.53040227841925 2490719.164243279 1.44731145588984 113.592401357011 9.52306229759467 73.9022551050638 6827328.04338326 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 11:47:31 2021-Apr-12 11:47
2154-Jul-28 14:51 00:02 Jupiter 1.74952874216987 1.74952787359517 1.74952961075084 3.63830152934851 3.50270631675081 2508001.118619673 2.11851987991661 178.955189667306 9.18728595097708 76.680962711537 6901705.43165064 T 45 CATAB v2.0f-lin.ifort 2021-Apr-12 11:47:31 2021-Apr-12 11:47

Alternate Designations
 A922 VD = 1969 TA4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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