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1090 Sumida (1928 DG)
Classification: Main-belt Asteroid          SPK-ID: 2001090
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2205204823011457 1.2315e-08  
a 2.35855265805326 4.9549e-09 au
q 1.838443488366706 2.8902e-08 au
i 21.53839495590111 6.0527e-07 deg
node 147.9542024329765 2.0979e-06 deg
peri 338.1739661494827 3.2578e-06 deg
M 290.5666708962842 3.1779e-06 deg
tp 2459651.671566799332
(2022-Mar-13.17156680)
1.2329e-05 TDB
period 1323.021166254918
3.62
4.1691e-06
1.141e-08
d
yr
n .2721044902244864 8.5746e-10 deg/d
Q 2.878661827739814 6.0475e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2921  
   data-arc span      33928 days (92.89 yr)  
   first obs. used      1928-02-20  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37493  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:58:30  

Additional Information
 Earth MOID = .863917 au 
 Jupiter MOID = 2.19627 au 
 T_jup = 3.428 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.54   n/a E2021B10  
diameter diameter 12.977 km 0.438 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 2.719 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z. (1991) Icarus 90, 117-122.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]
[Warner, B.D.; Megna, R. (2012) Minor Planet Bull. 39, 231.]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Lang, K. (2017) Minor Planet Bull. 44, 7-8.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.]
geometric albedo albedo 0.311   0.120 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
B-V BV 0.693   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.57 deg.
U-B UB 0.224   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.57 deg.

1090 Sumida (1928 DG)          Discovered 1928-Feb-20 by Oikawa, O. at Tokyo
Independent discovery Feb. 24 by K. Reinmuth, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1928 DG = 1950 JK = 1957 HH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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