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885 Ulrike (A917 SV)
Classification: Main-belt Asteroid          SPK-ID: 2000885
[ 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 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .184252571927701 1.6536e-08  
a 3.095923051481376 9.4381e-09 au
q 2.525491266755676 5.1978e-08 au
i 3.307423834097768 1.0469e-06 deg
node 148.888661465227 1.089e-05 deg
peri 203.8220608667843 1.2554e-05 deg
M 354.4930365349571 4.6654e-06 deg
tp 2459230.936405261921
(2021-Jan-16.43640526)		 2.5814e-05 TDB
period 1989.681966086221
5.45		 9.0985e-06
2.491e-08		 d
yr
n .1809334386782092 8.2738e-10 deg/d
Q 3.666354836207076 1.1177e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3686  
   data-arc span      41787 days (114.41 yr)  
   first obs. used      1906-08-24  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42405  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:34:57  

Additional Information
 Earth MOID = 1.51883 au 
 Jupiter MOID = 1.77174 au 
 T_jup = 3.194 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456833.5 (2014-Jun-25.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1875517229284195 1.6644e-08  
q 2.51336883900317 5.2677e-08 au
tp 2457247.151408852645
(2015-Aug-12.65140885)		 2.5089e-05 TDB
node 149.0558674662603 1.0927e-05 deg
peri 204.5511546923515 1.2502e-05 deg
i 3.30409154053706 1.0467e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      3686  
   data-arc span      41787 days (114.41 yr)  
   first obs. used      1906-08-24  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42405  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:34:57  

Additional Information
 Jupiter MOID = 1.77174 au 
 T_jup = 3.194 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.770191388289093E-16 -8.675744439378039E-16 1.733598933777021E-13 -6.313088760783297E-14 1.045939060288609E-13 -7.837562174675492E-15
q -8.675744439378039E-16 2.774827511326391E-15 -5.73804235292152E-13 2.012182476052207E-13 -3.390656976317665E-13 2.499060927813696E-14
tp 1.733598933777021E-13 -5.73804235292152E-13 6.294484476971006E-10 1.241274838856389E-11 1.460514821356372E-10 -2.194414530760976E-12
node -6.313088760783297E-14 2.012182476052207E-13 1.241274838856389E-11 1.194005666028154E-10 -1.176458205153784E-10 9.187495132211282E-12
peri 1.045939060288609E-13 -3.390656976317665E-13 1.460514821356372E-10 -1.176458205153784E-10 1.563007679795022E-10 -9.742746596652234E-12
i -7.837562174675492E-15 2.499060927813696E-14 -2.194414530760976E-12 9.187495132211282E-12 -9.742746596652234E-12 1.095559337002127E-12

[ 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 10.75   n/a E2021B10  
diameter diameter 30.537 km 0.756 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.90 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Menke, J. (2005) Minor Planet Bull. 32, 85-88.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.109   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

885 Ulrike (A917 SV)          Discovered 1917-Sep-23 by Belyavskij, S. at Simeis
Independent discovery Sept. 26 by M. Wolf, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A917 SV = 1933 QQ = 1934 XL = A906 SE 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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