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1255 Schilowa (1932 NC)
Classification: Main-belt Asteroid          SPK-ID: 2001255
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1741786323998322 1.9796e-08  
a 3.142235023404967 1.1171e-08 au
q 2.594924824349435 6.5996e-08 au
i 8.548602818214659 6.7147e-07 deg
node 237.6132277282719 4.8801e-06 deg
peri 133.3928648835641 5.9805e-06 deg
M 263.8432085625626 5.8927e-06 deg
tp 2459939.917833772598
(2022-Dec-26.41783377)
3.4873e-05 TDB
period 2034.494051160375
5.57
1.0849e-05
2.97e-08
d
yr
n .1769481703791042 9.4359e-10 deg/d
Q 3.689545222460499 1.3117e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3549  
   data-arc span      42293 days (115.79 yr)  
   first obs. used      1905-10-24  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41099  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:29:17  

Additional Information
 Earth MOID = 1.604 au 
 Jupiter MOID = 1.84838 au 
 T_jup = 3.169 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456962.5 (2014-Nov-01.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1732528502765794 1.9793e-08  
q 2.598459101038985 6.5998e-08 au
tp 2457907.323986686083
(2017-Jun-02.82398669)
3.0311e-05 TDB
node 237.6364750815779 4.8789e-06 deg
peri 133.9211813847614 5.9995e-06 deg
i 8.54821192866884 6.7134e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3549  
   data-arc span      42293 days (115.79 yr)  
   first obs. used      1905-10-24  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41099  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:29:17  

Additional Information
 Jupiter MOID = 1.84838 au 
 T_jup = 3.169 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.917541884687288E-16 -1.294824943242935E-15 -3.17525340671073E-13 -4.810584371673077E-15 -1.352971700643688E-14 2.248024828536282E-15
q -1.294824943242935E-15 4.355700338584926E-15 1.080141817986169E-12 1.557468810703776E-14 4.556252024477819E-14 -7.14190561162076E-15
tp -3.17525340671073E-13 1.080141817986169E-12 9.187828651943867E-10 1.176531744330555E-11 1.076333021120636E-10 -1.472368276023718E-14
node -4.810584371673077E-15 1.557468810703776E-14 1.176531744330555E-11 2.380392041602023E-11 -2.074303406266466E-11 -2.8904056633178E-12
peri -1.352971700643688E-14 4.556252024477819E-14 1.076333021120636E-10 -2.074303406266466E-11 3.599386816671412E-11 2.931790225049581E-12
i 2.248024828536282E-15 -7.14190561162076E-15 -1.472368276023718E-14 -2.8904056633178E-12 2.931790225049581E-12 4.506993947180723E-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 10.41   n/a MPCxxxxx  
diameter diameter 33.669 km 0.718 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 29.536 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. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.130   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1255 Schilowa (1932 NC)          Discovered 1932-Jul-08 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1932 NC = 1933 VB = A905 UC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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